EP2604531A1 - Packaging for food product and corresponding packaging method - Google Patents

Abstract

The method involves packaging a food substance in a flexible pocket, and sealingly closing the pocket. The food substance in the pocket is pasteurized and cooled. An outer envelope i.e. sleeve, is placed around the sealed pocket. The envelope and the pocket are firmly connected. The envelope is obtained by folding of a blank along folding lines (P1, P1'), where the blank comprises panels (21', 21'', 22-26) that form walls of the envelope after folding of the blank. An independent claim is also included for a package for containing food substance.

Description

1. Technical field of the invention

The field of the invention is that of agribusiness. More specifically, the field of the invention is that of the presentation and packaging of fresh food products ready to be consumed, in particular based on fish paste, or surimi.

2. Technological background

Some food products are sold ready for consumption, so that the consumer has no preparation stage to perform.

Among these products, there are pasteurized products based on fish surimi which can be in various forms. Thus, the surimi can be crumbled or grated. It can also be in the form of sticks that can be consumed alone or with an accompaniment. It is thus possible to consume them by adding a sauce, for example mayonnaise sauce, before eating them.

These sticks are placed inside a packaging, for example a resealable rigid container which allows a fractional consumption and ensures optimum preservation. This packaging is however not designed for a so-called "nomadic" or "take-away" consumption.

It is also known to package surimi sticks in a flexible and transparent bag. However, once the bag is open and placed on a support surface (such as a table or desk), the uneaten sticks may protrude from the bag and cause dirt on the support surface.

Packaging has been proposed for dry food products designed for so-called "nomadic" consumption. However, there is currently no suitable packaging for nomadic consumption of pasteurized food products, such as surimi sticks.

3. Objectives of the invention

The invention particularly aims to overcome these disadvantages of the prior art.

More specifically, an object of the invention is to propose a packaging for a pasteurized food product, ready to be consumed, intended for nomadic consumption (that is to say outside a point of sale, at office for example).

In particular, the invention aims to provide such a package that is convenient for the user, especially in that it can be easily opened and whose food content is easily accessible.

Another object of the invention is to provide such a packaging that is simple in design, inexpensive and reliable vis-à-vis the various shocks and vibrations that may occur during transport, and which meets the standards of food hygiene .

A further object of the invention is to provide such a package which is compact (reduced space for storage) and which optimizes logistics costs.

A particular object of the invention is to provide a method for the industrial manufacture of such a package for pasteurized food product.

Yet another object of the invention is to provide such a method which implements a reduced number of operations and which optimizes production costs.

4. Presentation of the invention

These objectives, as well as others that will appear later, are achieved using a food product package comprising a flexible bag for receiving a food product and secured to an outer envelope obtained by folding a blank comprising several panels which once folded the walls of said envelope, said envelope can take a folded storage position and an unfolded position facilitating access to said food product.

According to the invention, the envelope comprises at least two opening tabs of the package located respectively on opposite walls of the envelope.

The invention proposes a packaging for a food product, pasteurized for example (or fresh in the sense that it is not a frozen product or canned) which is particularly suitable for nomadic consumption.

The packaging comprises an outer casing (made of cardboard for example) which is placed around a flexible bag (made of plastic for example) containing a pasteurized food product and secured to the casing.

The envelope is obtained by folding a blank comprising several panels which once folded the walls of said envelope.

The outer casing thus constitutes a holster which allows easy handling of the packaging and practical use of the pasteurized product once the bag is opened.

The case can take a folded position which allows an optimization of the storage space in the store and at the consumer, and an unfolded position that allows the consumer to hold the packaging with one hand and easily access the content the other's bag. The case is self-supporting in both positions, it prevents dirt when resting on a support surface.

The envelope comprises at least two opening tabs of the package located on opposite walls of the envelope.

By their shape and position on the envelope, these tabs provide optimal visibility of the opening system of the flexible bag and allow an intuitive opening of the flexible bag by the user.

According to a first approach, said tabs are secured to one another.

It is therefore necessary to separate the tabs before being able to open the flexible pouch. The tabs are in this case a tamper-proof lock of the package.

According to a second approach, said tabs are secured to said flexible bag.

Advantageously, the flexible pouch is secured to said envelope by securing means configured so that the passage of said envelope from said folded position to the unfolded position causes the opening of the flexible bag.

The flexible pouch is secured to the inner faces of the envelope by glue dots for example.

Thus, if we consider the first approach, once the tabs disconnected by the user, the passage of the envelope from its folded position to its unfolded position causes, because the envelope is secured to the flexible bag, the opening of the flexible pouch.

It is therefore sufficient for the user to disconnect the tabs and then deploy the envelope to open the flexible bag and then consume the food content of the flexible bag.

If we consider the second approach, the passage of the envelope from its folded position to its unfolded position causes, because the tabs and the envelope are secured to the flexible bag, the opening of the flexible bag.

It is therefore sufficient for the user to spread the tabs to open the flexible pouch. The user can then deploy the envelope to consume the food content of the flexible pouch.

Preferably, said flexible pouch comprises a peelable closure.

Such a closure solution facilitates the opening of the flexible bag when the user deploys the envelope (first approach) or spreads the tabs (second approach).

The opening of the flexible pouch and the access to the food product contained in this pouch are thus greatly simplified.

According to a particular embodiment, the blank of the envelope comprises two rectilinear fold lines at the end of each of which is formed a notch.

Two notches formed in the extension of fold lines of the blank form, once the envelope assembled from the blank, two lateral lower edges (left and right) rounded. This quarter-round shape of the lower edges the envelope facilitates its insertion into a crate, intended to store and transport several packages of the invention, when it is flat and enveloping a bag of surimi sticks. Indeed, the width of a rack ready to sell is generally only slightly greater than the width of the envelope flat, and the insertion of a conventional envelope with lower edges at right angles is relatively complex in this case. case.

These slots also make it possible to optimize the indexing of the blanks of the envelope on a packaging line implementing the method of the invention which will be described in more detail below.

Advantageously, said casing has at its upper edge at least one notch for facilitating gripping of the food product in said pocket.

Preferably, said bag is intended to receive a pasteurized food product.

In this case, said pocket is intended to receive surimi sticks, for example.

The invention also relates to a method of packaging a food product in a package.

• conditionnement dudit produit alimentaire dans une poche souple;
• fermeture étanche de ladite poche ;
• pasteurisation dudit produit alimentaire dans ladite poche scellée;
• mise en place ou positionnement d'une enveloppe extérieure autour de ladite poche scellée;
• solidarisation de ladite enveloppe et de ladite poche.

According to the invention, such a method comprises the following steps:

• packaging said food product in a flexible pouch;
• sealing of said pocket;
• pasteurizing said food product in said sealed pouch;
• placing or positioning an outer envelope around said sealed pocket;
• securing said envelope and said pocket.

The packaging of the invention is thus manufactured by a packaging method implementing a reduced number of operations, thus optimizing the production costs.

In a particular embodiment of the invention, the method comprises a step of joining together, for example by gluing, at least two opening tabs of the package located respectively on opposite walls of the envelope.

In a variant, the method comprises a step of joining, for example by gluing, at least two opening tabs of the package located respectively on opposite walls of the envelope with said pocket.

Advantageously, the process comprises a cooling step following the pasteurization step.

Advantageously, the method comprises a first step of depositing at least one adhesive zone on at least one panel of said blank intended to come into contact with said pocket.

It is possible during this step to deposit a glue area on each of the tongues when they are intended to be secured to the pocket, or on at least tabs when the latter are intended to be secured to one another.

In a particular embodiment of the invention, the method comprises a second step of depositing at least one glue zone on at least one panel of said blank and a step of closing said envelope by superimposing an edge of said panel with the edge of another panel of said blank.

Advantageously, said first and second deposition steps of at least one glue zone are implemented simultaneously, or almost simultaneously.

5. List of figures

• la figure 1A est une vue schématique en perspective d'un emballage selon l'invention, le fourreau de l'emballage étant fermé ;
• la figure 1B est une vue schématique de dessus du fourreau seul en position fermée;

• la figure 1C est une vue schématique de face du fourreau seul en position fermée;
• la figure 2 est une vue schématique en perspective d'un emballage selon l'invention, le fourreau étant ouvert ;
• la figure 3 est une vue schématique à plat du fourreau de l'emballage de l'invention;
• la figure 4 est une vue schématique d'une partie d'une chaîne de conditionnement d'un produit alimentaire selon l'invention ;
• la figure 5 est un schéma bloc illustrant les principales étapes du procédé de conditionnement d'un produit alimentaire selon un mode de réalisation de l'invention;
• la figure 6 est une vue schématique de dessus d'une variante de fourreau en position fermée;
• les figures 7A et 7B sont des vues schématiques d'une autre variante de fourreau, à plat et assemblé respectivement.

Other characteristics and advantages of the invention will appear more clearly on reading the following description of a preferred embodiment, given as a simple illustrative and nonlimiting example, and the appended drawings, among which:

• the Figure 1A is a schematic perspective view of a package according to the invention, the sheath of the package being closed;
• the Figure 1B is a schematic view from above of the sheath alone in position closed;

• the figure 1C is a schematic front view of the sleeve only in the closed position;
• the figure 2 is a schematic perspective view of a package according to the invention, the sleeve being open;
• the figure 3 is a schematic plan view of the sheath of the package of the invention;
• the figure 4 is a schematic view of a portion of a packaging line of a food product according to the invention;
• the figure 5 is a block diagram illustrating the main steps of the method of packaging a food product according to one embodiment of the invention;
• the figure 6 is a schematic top view of a sleeve variant in the closed position;
• the Figures 7A and 7B are schematic views of another variant of sheath, flat and assembled respectively.

6. Detailed description of an embodiment of the invention 6.1 Example of packaging for pasteurized food product

On the Figures 1 to 4 and 6 scales and proportions are not strictly adhered to for the purpose of illustration and clarity.

As illustrated on the Figure 1A , the packaging 1 for food product according to the invention comprises a primary packaging, in the form of a bag (or container) 3 flexible which is intended to receive a pasteurized food product, such as surimi sticks, for example. The bag 3 is surrounded by a secondary packaging in the form of a sleeve (or outer casing or case) 2 relatively rigid and self-supporting. On this Figure 1A , the sleeve 2 is shown flat and the bag 3 is closed (the food content of the bag 3 is not accessible). The bag 3 when sealed slightly protrudes from the upper edge of the sleeve 2 to allow easy opening of the bag 3.

The sheath 2 is obtained from a single piece, in the form of a sheet of semi-rigid and recyclable material, such as cardboard, which is pre-cut so as to obtain the blank F of the figure 3 .

This blank F is composed of several panels defined by fold lines and which, once folded, the walls of the sleeve 2. The sleeve 2 assembled from the blank F is substantially stable shape, whether in the folded position ( Figures 1A , 1B, 1C ) or unfolded ( figure 2 ). The sheath 2 is tubular and open at both its upper and lower ends, the openings being located in a plane perpendicular to the longitudinal axis (x) of the sheath 2. The shape of the cross section of the sheath 2 is, in the folded position , polygonal (six-sided). The sleeve comprises a front wall 24 and a rear wall 21 which are, on the Figure 1B , close, without being in contact, and substantially parallel (in an alternative, these walls 21, 24 are slightly convex). The front walls 24 and rear 21 are connected by side walls consisting of panels 22, 23 and 25, 26, these panels being hinged about a fold line P ₁ and P ' ₁ respectively.

The bag (or bag) 3 is made from a flexible plastic film, polypropylene for example. The bag 3 is able to receive a pasteurized food product, such as surimi sticks. The bag 3 is held in the sheath 2 by means of bonding areas, such as glue points. The bag 3 is, for example, fixed on the inner faces of the walls 21 and 24 of the sheath 2.

When the user wishes to consume the surimi sticks of the bag 3, he opens the bag 3 and unfolds the sleeve 2 from the folded configuration of the Figure 1A to that unfolded from the figure 2 .

To pass the sheath 2 from its closed position of the Figure 1A at its open position the figure 2 , the user applies with his fingers a pressure on the fold lines P ₁ and P ' ₁ of the sheath 2. During this volume development of the sheath 2, the fold lines P ₁ and P' ₁ get closer to the inside the sheath 2 and the walls 24 and 21 move away. In addition, the angle between the panels 22 and 23 (and between the panels 25 and 26 also) passes, in this example, from 60 ° to 180 °.

The cross-sectional shape of the sheath 2 is, in the unfolded position, polygonal with four sides, the front 24 and rear walls 21 being in this example convex and the side walls consisting of panels 22, 23 and 25, 26 being concave.

Once the sheath 2 is opened ( figure 2 ), the latter can be held by one hand by the user, the panels 22, 23 serving as a receiving surface of the thumb of the user and the panels 25, 26 serving as receiving surface of the other fingers of the hand of the user.

Once this operation has been performed, the user can, with his other hand, access the surimi sticks housed in the bag 3. The panels 21 ', 24 and 21 "of the blank F of the sheath 2 comprise a curved edge E' ₂ , E ₁ , E " ₂ respectively so that once the sheath 2 assembled, the latter has two notches E ₁ , E ₂ . These indentations, or rounded edges, E ₁ , E ₂ leave the consumer the opportunity to appreciate the appearance of the food content of the bag 3 and facilitate access to the contents of the bag 3 once it is open. In a variant, a recess is provided only on one side of the sheath 2.

The sheath 2 is self-supporting, so it when opened or closed to maintain the package 1 standing on its base and protect the bag 3 (and its food content) shocks.

The bag 3 being connected by dots of glue (or any other suitable adhesive) to the inner faces of the panels 21, 24 of the sheath 2, the walls of the bag 3 move away when the sheath 2 is set in volume. In other words, the sheath 2 imposes its shape on the bag 3.

Once the sheath 2 is put in volume, the package 1 can be placed on a flat support, a table for example, and the user can consume the surimi sticks by taking them in the bag 3 without them touching the table and dirty it.

Such a package 1 is particularly advantageous in that it allows a quick and convenient consumption of surimi sticks. In addition, it can be transported flat and, once the surimi sticks consumed, flattens to reduce the volume of waste.

As we see on the figure 3 two notches E ₃ , E ₄ are formed in the extension of the fold lines P ₁ , P ' ₁ respectively.

Once the sleeve 2 assembled from the blank F, these notches E ₃ , E ₄ form two lateral lower edges (left and right) rounded. This quarter-round shape of the lower edges of the sheath 2 facilitates its insertion into a crate, intended to store and transport several packages of the invention, when it is flat and that it wraps a bag of surimi sticks. Indeed, the width of a rack ready to sell is generally only slightly greater than the width of the sleeve 2 flat, and the insertion of a conventional sheath with lower edges at right angles is relatively complex in this case .

These notches E ₃ , E _{4 also} make it possible to optimize the indexing of the blanks of the sleeves 200 to 203 on a packaging line implementing the method of the invention which will be described in more detail below.

On the figure 4 , there are several blanks 200 to 203 arranged on a conveyor of the packaging line. The notches E ₃ , E ₄ of each of the blanks 200 to 203 cooperate with cleats T of the conveyor. These cleats T allow guidance and optimized centering blanks 200 to 203 on the conveyor along the packaging line in the direction of advance represented by the arrow.

6.2 Manufacture of surimi sticks

The figure 5 is a block diagram illustrating the main steps of the method of manufacturing a package 1 of the invention.

In a first step 10, it proceeds to the manufacture of surimi sticks which is well known to those skilled in the art. Surimi sticks are made from a dough, called surimi-base or premelted, which usually consists of ground fish flesh (hake, place, whiting for example), water, starch, aromas, salt and dyes.

The amount or nature of the constituents of the dough can vary without departing from the scope of the present invention.

6.3 Conditioning surimi sticks

After manufacture of the surimi sticks (step 10), they are packaged under a film (filming step 11) which is sealed, that is to say sealed (step 12) so as to form a flexible bag, identical to the bag 3. Optionally, an inert gas is injected during closure in the bag. The bags containing the surimi sticks are then heat-treated (step 13) according to a temperature scale of between 80 and 90 ° C for a period of between 60 and 90 minutes in order to pasteurize the sticks and complete their cooking. After cooling (step 14), the bags containing several juxtaposed surimi sticks are then ready to be packaged.

In the following steps, the bag 3 and the cardboard sleeve 2 are assembled so as to form the package 1, the bag 3 being fixed to the inner face of the two walls 21 and 24 of the sleeve 2 via a or several bonding areas. These bonding areas are of point and / or linear shape.

To do this, the adhesive is available on the panels 21 ', 24, 21 "of the blank F of the sleeve 2 (step 151), and then the sachet 3 is placed on the blank F. The sachet 3 is wrapped with the blank F (Step 16) so as to secure (step 17) and to obtain the sleeve 2. Finally, the sheath 2 is closed by superimposing the edges of the panels 21 'and 21 "on the (s) which (s) was arranged previously glue (step 152).

Of course, these operations are implemented in such a way as not to damage the surimi sticks contained in the bag 3.

Preferably, the application of the adhesive zones (sub-steps 151 and 152 of step 15) intended to fix the bag on the blank F and to close this blank F on itself is carried out simultaneously, or almost simultaneously, on the packaging line. This makes it possible to optimize the resources and manufacturing costs of the packaging 1, a single glue tank being therefore necessary.

The cardboard sleeve 2 can be printed and / or labeled, before or after step 17.

The packages 1 are then placed in ready-to-sell crates which are transported to points of sale where the surimi sticks are then ready for sale.

6.4 Automatic opening of the sachet

In the embodiment described above, the bag 3 must be opened prior to putting the sheath 2 into volume.

In another embodiment of the invention, the setting of the volume of the sleeve 2 causes the opening of the bag 3. Thus, the unfolding of the sleeve 2 by bringing the fold lines P1, P'1 towards the inside of the sleeve 2 causes the opening of the bag 3, without requiring handling of the bag by the user.

6.5 Variants

The invention is of course not limited to the example described.

Thus, in an alternative embodiment, the sheath is first assembled, then the bag of surimi sticks is inserted into the sheath obtained.

Optionally, the bag can be printed.

In an embodiment variant illustrated on the figure 6 , the panels 22 and 23 of the sheath 2 are not symmetrical with respect to the fold line P ₁ , and the panels 25 and 26 of the sheath 2 are not symmetrical with respect to the fold line P ' ₁ . Note further that the shape and dimensions of the panel 25 are identical to the panel 22, and those of the panel 23 are identical to the panel 26. Unlike the sheaths of the prior art whose side walls have a "V" shape in position folded sheath (the articulated panels of the side walls being of identical shape and dimensions), the sheath 2 is in this case symmetrical with respect to an axis of symmetry (X) which extends in the longitudinal direction of the sleeve 2, in parallel at the folding lines P ₁ and P ' ₁ .

Such an approach allows a controlled opening of the sheath.

The Figures 7A and 7B illustrate another embodiment of the package of the invention.

In the example illustrated in these figures, the sheath 20 is obtained from a single piece, in the form of a sheet of semi-rigid and recyclable material, such as cardboard, which is precut so as to obtain the F 'flan of the Figure 7A .

This blank F 'is composed of several panels delimited by fold lines and which, once folded, the walls of the sheath 20. The sheath 20 is tubular and open at both its upper and lower ends. The shape of the cross section of the sleeve 20 is, in the folded position, polygonal (six-sided). The sheath 20 comprises a front wall 240 and a rear wall 210 (formed by the panels 210 'and 210 ") which are brought together, without being in contact, and substantially parallel (in an alternative, these walls 210, 240 are slightly convex) The front 240 and rear 210 walls are connected by side walls consisting of panels 220, 230 and 250, 260, these panels being articulated around a fold line P ₁₀ and P _'10 respectively.

The panels 210 ', 240 and 210 "of the blank F' of the sheath 20 comprises a curved edge E _'20, E _10, E' _20, respectively, so that once the sheath 20 assembled, the latter having two indentations E ₁₀ , E ₂₀ . As we see on the Figure 7A , notches E ₃₀ , E _'30 and E ₄₀ , E' ₄₀ are formed in the extension of the fold lines P ₁₀ , P _'10 respectively.

Note the presence of two tabs, or ears, 0 ₁ and 0 ₂ on the curved edges E ₁₀ , E " ₂₀ panels 240 and 210" respectively.

When the blank F 'is assembled, the sleeve 20 has the shape illustrated on the Figure 7B , the tabs 0 ₁ and 0 ₂ overlapping only partially in this example (they may not overlap at all, or more according to alternative embodiments).

The bag (not shown on the Figure 7B ) is a peelable bag. The bag is adapted to receive a pasteurized food product, such as surimi sticks. The bag is held in the sleeve 20 by means of bonding areas, such as glue points. The bag is, for example, fixed on the inner faces of the walls 210 and 240 of the sheath 20.

According to a first approach, the inner faces of the tongues 0 ₁ and 0 ₂ are each bonded to one of the upper walls of the bag placed in the sleeve 20. These tongues 0 ₁ and 0 ₂ make it easier to separate each edge of the film forming the bag and thus facilitate the opening of the bag containing the surimi sticks.

When the user wishes to consume the surimi sticks of the bag, it spreads the tabs 0 ₁ and 0 ₂ which causes the opening of the bag. The user can then deploy the sleeve 20 by applying pressure on the sidewalls (220, 230, 250, 260) of the sheath 20.

By their shape and position on the sheath 20, these tongues 0 ₁ and 0 ₂ provide optimal visibility of the opening system of the bag and allow an intuitive opening of the bag by the user.

In a second approach, the tongues 0 ₁ and 0 ₂ are glued to each other above the bag. They serve as a tamper-proof lock of the package 1 '. After unlocking the package 1 '(by breaking at least one of the tongues 0 ₁ and 0 ₂ on which is provided an area of weakness), the pressure on the flanks (220, 230, 250, 260) of the sleeve 20 allows the opening of the bag by peel.

There is therefore no manipulation of the bag by the user to consume the surimi sticks, the opening of the bag requiring the breaking of at least one of the tongues 0 ₁ and 0 ₂ , then the deployment of the sleeve 20.

Alternatively, once one or both tongues 0 ₁ and 0 ₂ broken (s) by the user, it must manually separate the edges of the film forming the bag and deploy the sheath 20.

Of course, it is possible to implement more than two tabs. In addition, the shape of the tabs is not limited to that illustrated.

In the embodiment illustrated on the Figures 7A and 7B , notches E ₃₀ and E _{40 may be provided} , the lower edges of the sheath being then not rounded. It is possible, in addition or only, not to provide notches E ₁₀ , E ₂₀ .

In addition, the pasteurization can be implemented by high pressures.

The present invention is not limited to a pasteurized food product of surimi stick type. On the contrary, the packaging according to the invention can be applied to the packaging of various and varied food products, pasteurized or not.

Claims (15)

Packaging (1) for a food product comprising a flexible bag (3) intended to receive a food product and secured to an outer shell (2) obtained by folding a blank (F) comprising several panels which once folded the walls of said envelope (2), said envelope (2) being able to assume a folded storage position and an unfolded position facilitating access to said food product, characterized in that the envelope (2) comprises at least two tongues (0 ₁ , 0 ₂ ) opening of the package located respectively on opposite walls of the casing (2). Packaging (1) according to claim 1, characterized in that said tongues (0 ₁ , 0 ₂ ) are secured to one another. Packaging (1) according to claim 1, characterized in that said tongues (0 ₁ , 0 ₂ ) are secured to said flexible bag (3). Packaging (1) according to one of claims 1 to 3, characterized in that the flexible bag (3) is secured to said casing (2) by securing means configured so that the passage of said casing (2) from said folded position to the unfolded position causes the opening of the flexible bag (3). Packaging (1) according to one of claims 1 to 4, characterized in that said flexible pouch (3) comprises a peelable closure. Packaging (1) according to one of claims 1 to 5, characterized in that the blank (F) of the casing (2) comprises two rectilinear folding lines (P1, P'1) at the end of each of which is formed a notch (E3, E4). Packaging (1) according to one of claims 1 to 6, characterized in that said casing (2) has at least one notch (E1, E2) for facilitating the gripping of the food product in said pocket (3). Packaging (1) according to one of claims 1 to 7, characterized in that said pocket (3) is intended to receive a pasteurized food product. Packaging (1) according to claim 8, characterized in that said pocket (3) is intended to receive surimi sticks. Process for packaging a food product in a package (1) according to one of Claims 1 to 9, characterized in that it comprises the following steps: packaging (11) of said food product in a flexible pouch (3); - sealed closure (12) of said pocket (3); pasteurization (13) of said food product in said sealed pouch (3); - placing (16) an outer envelope (2) around said sealed pocket (3), said envelope (2) being obtained by folding a blank (F) comprising a plurality of panels which once folded the walls said envelope (2); - Securing (17) of said casing (2) and said pocket (3). A method according to claim 10, characterized in that it comprises a step of joining together at least two opening tongues (0 ₁ , 0 ₂ ) of the package located respectively on opposite walls of the envelope ( 2). Method according to claim 10, characterized in that it comprises a step of joining at least two opening tabs (0 ₁ , 0 ₂ ) of the package located respectively on opposite walls of the envelope (2) with said pocket (3). Method according to one of claims 10 to 12, characterized in that it comprises a first step (151) of depositing at least one glue area on at least one panel of said blank (F) intended to come into contact with said pocket (3). Process according to Claim 13, characterized in that it comprises a second step (152) of depositing at least one glue zone on at least one panel of said blank (F) and a step of closing said envelope (2) by superimposing an edge of said panel with the edge of another panel of said blank (F). Process according to claim 14, characterized in that said first and second steps of depositing at least one glue zone are implemented simultaneously, or almost simultaneously.

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