WO2022063886A1

WO2022063886A1 - Casing for protecting food and beverages products, casing blank and method for manufacturing such casing from the casing blank

Info

Publication number: WO2022063886A1
Application number: PCT/EP2021/076181
Authority: WO
Inventors: Jean-Christophe Guillaud-Bataille; Marco MAGATTI; Nicolas OBLIGER; Christian MONIN
Original assignee: Société des Produits Nestlé S.A.
Priority date: 2020-09-28
Filing date: 2021-09-23
Publication date: 2022-03-31
Also published as: AU2021346845A1; CN116194375A; BR112023004873A2; EP4217280A1; CA3190806A1; US20230365290A1

Abstract

Casing (1000) for transporting food or beverage product, comprising a side panel part (1200) comprising at least two side panels (1201, 1202), each side panel comprising a peripheral free edge (1211, 1212) and a sealing margin (1221, 1222) along the peripheral free edge, and one band (1100), made from one sheet, and comprising a sealing area which is sealed to the sealing margin (1221, 1222) of both side panels, forming a flange (1300) extending outward. Blank for forming such casing and method for manufacturing such casing.

Description

Casing for protecting food and beverages products, casing blank and method for manufacturing such casing from the casing blank

Field of the invention

The invention relates to a casing for protecting food and beverages products, for example of food or beverage precursors.

More specifically, the invention relates to a casing for storing loose product, for example of food or beverage precursors, or individual portions of product, or individual packages of individual portions of product, or a strip of packages of individual portions of product; such an individual portion of product is for example a roast-and-ground coffee compacted piece, adapted for the preparation of a food or a beverage in a food or beverage preparation apparatus.

Such a package of a strip of packages (also called flowpack) relates to a package for storing individual portion of food or beverage precursor protected from the ambient air and mechanical or physical constraints and which can be adapted to a dispensing device for dispensing the portion individually into a food or beverage preparation apparatus such as a coffee machine for in-home or professional use.

The invention also relates to a casing blank and a method for manufacturing such a casing from the casing blank.

Background of the invention

It is known that coffee is sold in airtight packages to protect it from contact with air that would cause quick oxidation and loss of aromas. The field of beverage closure capsules has developed tremendously essentially because each coffee portion can be well protected by a suitable gastight, functional package until coffee is extracted in a suitable coffee machine.

For example, document WO 2019/219524 discloses a package containing portions of beverage precursor in the form of a portioning band comprising a pair of packaging sheets sealed to one another for enclosing and sealing portions individually and separately in a substantially oxygen impervious manner by the sheets being sealed together about each portion, wherein the portions take the form of substantially spherical shapes which are covered on each side of the band by a sheet being formed with cavities to receive a part of each portion and wherein at least one of the sheet can be cut or tom at least partially about each portion for removal of each portion individually. This document also discloses a casing in which the portioning band may be arranged in a continuous manner in superimposed layers. Such casing can then be positioned in an apparatus to extract the portioning band from the casing and then prepare the beverage from one portion.

Document WO 2019/219523 discloses a beverage portion dispenser for receiving a portioning band containing a plurality of individually sealed beverage precursor portions for the preparation of a beverage wherein the dispenser comprises means for individually collecting and dispensing the beverage precursor portions to a dispensing area, wherein the collecting and dispensing means comprises a portion drive assembly arranged for receiving a part of the flexible portioning band and a separating assembly for individually separating the beverage precursor portions from the portioning band. Same, the portioning band is initially arranged in a casing, and is progressively withdrawn from it.

Today, most of the rigid and semi rigid packaging, like such a casing, offer mainly a mechanical shield and are not designed to be tight to external aggressions.

Besides, it is desirable to provide a casing which is at least recyclable, for example biodegradable, or even possibly compostable.

To this end, casings can be made, for example, of paper-based material, often coated to protect against moisture and/or oxidizing.

The present invention alleviates those problems and seeks to provide a casing which would better protect the products it contains from external aggressions, and which can be at least made of recyclable material, in particular of paper-based material. Summary of the invention

In a first aspect, the invention relates to a casing for transporting food or beverage product, the casing being characterised in that it comprises:

- a side panel part comprising at least two side panels, each side panel comprising a peripheral free edge and a sealing margin along the peripheral free edge, and

- one band, made from one sheet, a comprising a sealing area, the sealing area of the band being sealed to the sealing margin of both side panels, forming a flange extending outward.

Here, sealing designates any closure means configured to link two elements one to the other, in order to provide an airtight bond, including for example gluing, soldering or welding.

Airtight bond is a bond between two elements that does not allow air to cross through.

This airtight bond can be quickly tested using a ‘bubble bath test”:, the casing is fully immersed in a water tank in which a vacuum of approximately -300mbars is applied.

The presence or not of bubbles escaping from the sleeve is observed.

This is a quick and inexpensive way to test if the casing is tight and to locate potential leakage. However, this protocol does not allow to qualify any tightness level.

If this type of information is need, a measure of WVTR (Water Vapor Transmission Rate) may be made.

The principle is to expose the casing to a tracer gas in a chamber and to insert (in a tight way) a sensor through the wall of the casing and to measure over a certain time the evolution of the quantity of the tracer gas going inside the case (from the chamber full of tracer gas inside the casing)

This protocol is more complicated and slower but allows precise measuring of the tightness level. Owing to such flange (formed by the sealing margin), it is possible de provide a casing, which can be made of paper-based material, in which a junction between two different parts can be tight.

Whereas a paper-based material is usually fragile and tears easily, it appears that such a construction enables to build a casing which is not only mechanically strong enough, but also which can be closed in a sufficiently airtight manner to preserve the product it may contain.

The invention thus allows to protect products included in the casing from oxygen, moisture, humidity and/or other external possible aggressions, while also offering a mechanical shield to protect the products from impacts, vibrations or other constrains occurring along the life of the products.

Preferably, the casing is made out of a minimum of parts that are assembled together with a minimum of junction areas aiming to reduce any potential leakage.

Consequently, its construction has basically at most three main parts: two side panels and one surrounding “belt”, which are sealed together.

In other words, the band thus surrounds both side panels.

According to an interesting embodiment, the construction can have two main parts.

For example, both side panels are made from one sheet.

For example, the side panel part is made of one sheet which comprises the two side panels and a linking part between the two side panels linking both side panels one to the other, the side panel part is folded in a II- shape and the linking part forms a bottom of the II, the linking part further comprising two free edges on either side between the two side panels, and a sealing margin along its two free edges, the peripheral free edge of each side panel extending from one free edge of the linking part to the other, and the band being sealed to the sealing margin of both side panels, and to the sealing margin of both free edges of the linking part, forming the flange extending outward.

Thus, the side panel part comprises a free peripheral edge, and a sealing margin along its free peripheral edge. This kind of packaging is enhancing conservation, and, simultaneously, mechanical protection of the product the casing may contain.

For example, the casing encloses loose product, for example food or beverage precursors, for example roast-and-ground coffee.

For example, the casing encloses individual portions of food or beverage precursors, such as roast-and-ground coffee compacted pieces, adapted for the preparation of a food or a beverage in a food or beverage preparation apparatus.

For example, the casing encloses a strip of packages (also called flowpack), each of the packages packaging one individual portion of food or beverage precursors.

The casing is designed in such a way that the flowpack or the individual portions can be stored into it, in an arrangement as compactly as possible: for example, in a quincunx arrangement.

For example, in case of a flowpack, when the casing is closed, the flowpack is locked in position and cannot move because it has nearly no gap. However, when the casing is open, the flowpack can be progressively withdrawn from the casing during dispensing, e.g. delayered or unwound, with one portion at a time, through the opening.

The casing is expected to ensure a certain level, if possible, an optimized level of barrier to protect the product so it is built in a tight manner.

The geometry of the casing could be any geometrical shape, preferably it has a parallelepiped shape.

According to one example embodiment, at least one of the side panels has a rounded corner, in particular when the side panel has a polygonal shape.

According to one example embodiment, the sealing flange extending outward, extends perpendicularly compared to at least one side panel core (which is a part of the side panel surrounded by the margin).

According to one example embodiment, the sealing flange comprises a part of the band extending beyond the one side panel. For example, the part of the band extending beyond the one side panel comprises the sealing area of the band.

According to one example embodiment, the sealing flange comprises the sealing margin of the one side panel which is folded outward.

According to one interesting embodiment, the flange comprises at least one notch formed in at least a part of the flange surrounding a corner of the casing.

A notch here designates a cut, like a V-shape cut, made in a part of the casing, which enables to limit pleats, in particular where the flange surrounds a corner of the casing, as this may involve at least two curvatures of the part of the casing. By limiting pleats, during formation of the casing, the notches will help ensuring tight bond.

For example, at least one of the side panels can be embossed.

For example, at least a part of the casing, or all, is preferably made of at least a recyclable and/or recycled material, or alternatively the casing may be made of biodegradable material or even possibly a compostable material.

For example, at least part of the casing, or all, is preferably made of a bio-sourced material, preferably a bio-sourced biodegradable or bio-sourced compostable material.

The term “compostable” means that the material is substantially broken down within a few months or weeks. It can be home compostable or industrially compostable. When it is industrially composted, the material is at least about 90% composted under specific conditions within six months as determined by the method of ISO14855 or EN13432.

For example, at least one part can be made of a paper-based structure material.

For example, the material comprises a laminated paper.

For example, the material comprises a coating.

For example, the material is made of a barrier paper. Such barrier paper is configured to form a barrier against oxygen and/or humidity (vapor) in order to better preserve what is stored in the casing, and is able to be sealed, for example glued, in an airtight manner. For example, at least a part of the casing, or all, is formed of oxygen impervious material such as a laminate including at least one gas barrier layer.

For example, the material has a permeability to oxygen (OTR: oxygen transmission rate) which is lower than or equal to 2 mL/m²/day/bar for a shelf life of approximately twelve months.

For example, the material has a permeability to humidity (WTR: water transmission rate) which is lower than or equal to 2 g/m²/day for a shelf life of approximately twelve months.

Furthermore, it is preferably barrier to UV light.

Examples of materials are PBS, PLA, cellulose and combinations thereof.

The laminate may comprise a seal layer such as PLA, PBA, PBS, copolyester of adipidic acid, 1 , 4-butanediol and dimethyl terephthalate (PBAT), polylactic acid (PLA), polyvinyl butyral (PVB), poly(vinyl acetate-ethylene) (VAE), poly(ethylene-vinyl acetate) (EVA) and combinations thereof. It may comprise an oxygen barrier layer such as EVOH, PVOH, SiOx, cellophane, metal and combinations thereof. An example of laminate can be PLA/EVOH/PLA. In these examples, PLA may be replaced by PBA, PBS, PPS, copolyester of adipidic acid, 1 , 4-butanediol and dimethyl terephthalate (PBAT), polyvinyl butyral (PVB), poly(vinyl acetate-ethylene) (VAE), poly(ethylene-vinyl acetate) (EVA) and combinations thereof. EVOH may also be replaced by PVOH and/or SiOx.

For example, at least one part of the casing is made of a rigid and/or semi-rigid materials: it could for instance be a fiber based material (solidboard).

For example, the material comprises an overall weight comprised between 200 gsm to 1500 gsm.

For example, at least one part of the casing has a thickness comprised between 0.1 mm and 2 mm, for example about 0.5 mm.

The material can be associated with one or several functional layers or other kind of additive (for instance water dispersion coating) which brings additional functionality to the base material: sealing, barrier to oxygen, moisture and humidity, or other. Having only one layer of material could drastically reduce material usage. It would also facilitate recyclability of such a casing, being a single layer casing.

According to an interesting example embodiment, the casing is preferably equipped with an opening system.

The opening system is preferably comprised in the band, although it can be comprised in one side panel.

For example, the opening system comprises at least one opening, for example which is made in a part of the casing, and through which some product stored in the casing can be extracted from the casing.

For example, the opening system further comprises a closing element configured to close the opening.

According to one example embodiment, the closing element may be a lid or a cap for example, and covers the opening in an airtight manner.

For example, the closing element can thus be glued on the part of the casing in which the opening is made, or sealed onto the flange.

According to another example embodiment, the closing element may be a pulling tongue.

For example, the casing comprises a pre-cut line demarcating the closing element and/or the opening.

A pre-cut here designates a cut performed in only a part of a thickness of the sheet and/or weakened lines configured to guide an opening to a specific pre-defined shape designed for the opening.

Such a pre-cut is for example a few microns deep.

Such a pre-cut can be realised by means of a laser for example.

For example, the pre-cut is a cut performed in only a part of a thickness of the sheet of the band.

Then, according to one example embodiment, the band comprises a pulling tongue, the pulling tongue being demarcated by at least one pre-cut line which also delimits the opening. According to one example embodiment, at least a part of the pre-cut line is done in the sealing area of the band in which the band is sealed to at least the sealing margin of one side panel.

Thus, it keeps a full tightness of the casing before it is open.

According to one example embodiment, the opening system comprises a string.

For example, the string is embedded into a material layer of the sheet of the part of the casing in which the closing element is comprised.

For example, by pulling on the string or on any part attached to the string, the applied force tears the base material following the pre-defined opening shape defined by the pre-cut line.

The casing thus has an easy opening system.

According to one example embodiment, the opening system is located nearby one corner of the casing.

For example, once the casing is opened, the closing element remains attached to the casing. Optionally, it is then locked on position.

According to one example embodiment, the opening comprises a main wide part, through which product can be extracted, and a tail configured to split a part of the casing below the main opening into two flaps, like saloon doors.

Such configuration allows to increase a size of the opening. In addition, the two flaps allow to better maintain the product, in particular individual portions, inside the casing while it is open.

According to a second aspect, the invention relates to a casing blank to manufacture a casing as described above.

The casing blank preferably comprises:

- A side panel part comprising at least two side panels, configured to build the two side panels of the casing, each side panel comprising a peripheral free edge and a sealing margin along the peripheral free edge which is configured to be bent outward to form a flange, and

- one band, made from one sheet, comprising a sealing area configured to be sealed to at least the sealing margin of both side panels. For example, the sealing margin of at least one side panel and the sealing area of the band are configured to form at least a part of the flange of the casing extending outward.

For example, at least a part of the blank, or all, is preferably made of at least a recyclable and/or recycled material, for example a biodegradable material, or even possibly a compostable material, preferably bio-sourced biodegradable or bio-sourced compostable material.

The term “compostable” means that the material is substantially broken down within a few months or weeks. It can be home compostable or industrially compostable. When it is industrially composted, he material is at least about 90% composted under specific conditions within six months as determined by the method of ISO14855 or EN13432.

For example, at least one part can be made of a paper-based structure material.

For example, the material comprises a laminated paper.

For example, the material comprises a coating.

For example, the material is made of a barrier paper. Such barrier paper is configured to form a barrier against oxygen and/or humidity in order to better preserve what will be included in the casing, and is able to be sealed or glued in an air tight manner.

For example, at least a part of the blank, or all, is formed of oxygen impervious material such as a laminate including at least one gas barrier layer.

Furthermore, it is preferably barrier to UV light.

Examples of materials are PBS, PLA, cellulose and combinations thereof. The laminate may comprise a seal layer such as PLA, PBA, PBS, copolyester of adipidic acid, 1 , 4-butanediol and dimethyl terephthalate (PBAT), polylactic acid (PLA), polyvinyl butyral (PVB), poly(vinyl acetate-ethylene) (VAE), poly(ethylene-vinyl acetate) (EVA) and combinations thereof. It may comprise an oxygen barrier layer such as EVOH, PVOH, SiOx, cellophane, metal and combinations thereof. An example of laminate can be PLA/EVOH/PLA. In these examples, PLA may be replaced by PBA, PBS, PPS, copolyester of adipidic acid, 1 , 4-butanediol and dimethyl terephthalate (PBAT), polyvinyl butyral (PVB), poly(vinyl acetate-ethylene) (VAE), poly(ethylene-vinyl acetate) (EVA) and combinations thereof. EVOH may also be replaced by PVOH and/or SiOx.

For example, at least one part of the blank is made of a rigid and/or semi-rigid materials: it could for instance be a fiber based material (solidboard).

The material can be associated with one or several functional layers or other kind of additive (for instance water dispersion coating) which brings additional functionality to the base material: sealing, barrier to oxygen, moisture and humidity, or other.

Having only one layer of material could drastically reduce material usage. It would also facilitate recyclability of such a casing, being a single layer casing.

Preferably, the blank comprises a minimum of parts in order to minimize a number of junction areas aiming to reduce potential leakage of the casing to be built.

For example, the blank comprises at most three main parts: two side panels and one surrounding “belt”.

According to another interesting embodiment, the blank comprises two main parts.

For example, both side panels are made from one sheet. For example, the side panel part is made of one sheet which comprises the two side panels and a linking part between the two side panels linking both side panels one to the other.

The linking part comprises for example two free edges on either side between the two side panels, and a sealing margin along its two free edges.

According to one example embodiment, the linking part of the side panel part comprises at least one press-formed line which is transverse to both free edges of the linking part.

This press-formed line eases folding the side panel part in the form of a U.

The geometry of the side panels can be any geometrical shape, preferably they have a rectangular shape.

According to one example embodiment, at least one of the side panels comprises a press-formed line which is parallel to at least one peripheral free edge of the side panel.

Preferably the press-formed line extends parallel to all the peripheral free edge of the side panel.

For example, such press-formed line is formed a few millimetres at a distance from the peripheral free edge of the side panel, for example between 2 mm and 10 mm, thus forming the sealing margin between the peripheral free edge and the press-formed line.

Such press-formed line helps folding the sealing margin of the side panel along its free edge to later seal it to the band to form the flange.

For example, at least one of the side panel can be embossed.

For example, a press-formed line comprises a groove.

For example, the band comprises a length which is at least equal to a length of a peripheral free edge of one of the side panels. For example, by definition, the length of the band extends along a length direction of the band, and the band comprises a width extending perpendicularly to the length direction of the band.

According to one example embodiment, the band may have a rounded corner, for example at least a rounded tip.

According to one example embodiment, the band comprises at least one press-formed line configured to fold the band around a corner of a side panel.

Such press-formed line extends alongside the width direction of the band.

According to one interesting embodiment, the casing blank, for example in particular at least one part of the sealing margin of one side panel or the sealing area of the band which are configured to form at least a part of the flange of the casing extending outward, comprises at least one notch.

For example, the at least one notch is formed in at least a part of the casing configured to be folded to surround a corner of the casing.

A notch here designates a cut, like a V cut, made in a part of the casing blank, which enables to limit pleats in the flange when the part is folded, in particular where the part is configured to for a part of the flange to surround a corner of the casing.

Such a notch eases sealing of one side panel and the band in comers of the casing in a tight manner as they help avoiding pleats when the sealing margin is folded around corners.

According to an interesting example embodiment, the casing blank comprises an opening system, configured to form an opening system of the casing to be built.

The opening system is preferably comprised in the band blank, although it can be comprised in one side panel blank.

For example, the opening system comprises at least one opening.

For example, the opening system further comprises at least a closing element configured to close the opening. According to one example embodiment, the closing element may be a lid or a cap for example, and covers the opening in an airtight manner.

For example, the closing element can thus be glued on the part of the casing blank in which the opening is made, or sealed to it.

For example, the casing blank comprises a pre-cut line demarcating the closing element and/or the opening.

Such a pre-cut is for example a few microns deep.

Such a pre-cut can be realised by means of a laser for example.

Then, according to one example embodiment, the band comprises a pulling tongue, the pulling tongue being demarcated by at least one pre-cut line configured to also delimit the opening.

According to one example embodiment, at least a part of the pre-cut is done in the sealing area of the band in which the band is configured to be sealed to at least the sealing margin of at least one side panel.

According to one example embodiment, the opening system comprises a string.

For example, the string is embedded into a material layer of the sheet of the part of the casing blank in which the closing element is comprised.

For example, by pulling on the string or on any part attached to the string, the applied force tears the base material of the casing blank following the pre-defined opening shape defined by the pre-cut line.

According to one example embodiment, the opening system is located nearby one end of the band, or nearby a folding zone of the band in order to be nearby a corner of the casing when this later is built. According to one example embodiment, the closing element is configured to remain attached to the casing once the casing is opened. Optionally, it is configured to be possibly locked on position.

According to one example embodiment, the opening comprises a main wide part, and a tail configured to split a part of the casing blank next to the main wide part into two flaps, like saloon doors.

Such configuration allows to increase a size of the opening. In addition, the two flaps are configured to allow to better maintain product, in particular individual portions, inside the casing while it is open.

According to a third aspect, the invention relates to a method for manufacturing a casing as described above.

For example, the method comprises a step of providing a casing blank as described above.

For example, the method comprises steps of:

- sealing a sealing area of the band on at least a part of the sealing margin of a first of the two side panels, forming at least a part of the flange extending outward;

- placing product on the first side panel;

- sealing a sealing area of the band along the sealing margin of a second of the two side panels, finalizing forming a flange extending outward.

For example, the product is supplied as loose product or in individual portion.

For example, an individual portion can be packed in a package, each package thus comprising a portion of food or beverage precursor.

For example, packages can be provided individually, or in a strip of packages.

For example, the strip of packages can be wound in superimposed layers, with portions of packages arranged in quincunx between two adjacent layers of the strip of packages.

Therefore, the two side panels and the band are completely sealed one to the other so that the casing is sealed at least in an air tight manner. Here, a sealing step designate any closing step configured to link two elements one to the other in an airtight fashion, including for example gluing, soldering or welding.

According to one example embodiment, one sealing step comprises, an ultrasonic sealing step, a heat-sealing step, a gluing step (for example hot melt glue), a soldering or welding step, or any combination thereof, preferably including one ultrasonic sealing step.

According to one example embodiment, the method comprises a step of folding the band about at least one press-formed line to position the band around one corner of the first side panel.

According to one example embodiment, the method comprises a step of folding a sealing margin of at least one of the side panels along a corresponding press-formed line which is parallel to at least a part of the peripheral free edge of the side panel in order to form at least a part of the flange.

For example, the sealing margin is bent outward (compared to a core portion of the side panel).

According to one example embodiment, the method further comprises steps of:

- folding the side panel part made of one sheet into a II about the linking part;

- sealing the linking part of the side panel part to at least one end of the band; and

- completing sealing a sealing area of the band along a sealing margin of the side panel part.

For example, the step of folding the side panel part into a II about the linking part is performed after the step of sealing the band along the sealing margin of the first side panel.

For example, the step of completing sealing of the band along the sealing margin of the side panel part comprises a step of sealing the band along the sealing margin of the second side panel. According to one example embodiment, the step of folding the side panel part comprises a step of folding the linking part about at least one press- formed line.

For example, during any folding step, notches can enable to avoid pleats and therefore provide a better tightness of a corresponding sealing between the corresponding parts.

Brief description of the drawings

Additional features and advantages of the present invention are described in, and will be apparent from, the description of the presently preferred embodiments which are set out below with reference to the drawings in which:

Figure 1a shows an example embodiment of one individual portion of product like a food or beverage precursor;

Figure 1 b shows an example embodiment of a wound strip of packages comprising a plurality of food or beverage precursor’s portion packages;

Figure 2 shows a casing according to a first example embodiment of the invention, in a closed configuration (figure 2a) and open configuration (figure 2b);

Figure 3 shows a casing according to a second example embodiment of the invention, in a closed configuration (figure 3a) and open configuration (figure 3b);

Figure 4 shows a band blank according to one example embodiment of the invention;

Figure 5 shows a side panel blank according to a first example embodiment of the invention, for example as used in the casing of Figure 2 or Figure 3;

Figure 6 shows a casing according to a third example embodiment of the invention in a closed configuration;

Figure 7 shows a band blank according to another example embodiment of the invention, for example as used in the casing of Figure 6; Figures 8a and 8b show examples of a sealing of a band according to one example embodiment of the invention as shown in Figure 6;

Figure 9 shows a casing according to a fourth example embodiment of the invention;

Figure 10 shows a casing according to a fifth example embodiment of the invention;

Figure 11 shows a band blank according to an example embodiment of the invention, for example as used in the casing of Figure 9 or Figure 10;

Figure 12 shows a side panel blank according to an example embodiment of the invention, for example as used in the casing of Figure 9 or Figure 10;

Figure 13 shows method steps (figure 13a, figure 13b and figure 13c) for manufacturing a casing according to one example embodiment of the invention; and

Figure 14 shows an illustration of a food or beverage preparation apparatus receiving a casing according to an example embodiment of the invention comprising a strip of packages of individual portions (flowpack) for individually dispensing one portion from one package of the strip of packages.

Detailed description of the drawings

Figure 1 a illustrates an individual food and beverage portion 1 such as roast- and-ground coffee compacted piece, adapted for the preparation of a food or a beverage in a food or beverage preparation apparatus.

One portion 1 may contain a few grams of food or beverage precursors, for example 3 to 12 grams, corresponding to at least one or part of a serving of food or beverage, one serving may need several precursors to form a beverage depending on the type of beverage to be done (expresso, lungo ... ). The beverage precursor is preferable essentially roast-and-ground coffee. The beverage precursor may also comprise a mix of roast-and-ground coffee and soluble coffee or roast-and ground coffee, chocolate powder and milk powder. For example, one portion may be suitable for preparing one cup of coffee, but for a lungo, two portions may be needed.

RECTIFIED SHEET (RULE 91) ISA/EP The portions are preferably spherical. In the present description, the term “spherical” encompasses also designs such as multiple facets (e.g. like a “football” shape) or a sphere having truncated faces of diameter less than the diameter of the sphere or slightly ovoid or oval or egg shapes. A preferred shape is however a ball with substantially circular cross-sections.

Such individual portions 1 , for example 20 to 30 of them, can be packed directly in a casing. Spacers or interlayers may be added in the casing to separate and/or preserve the integrity of the individual portions, thereby defining a storing pattern.

Figure 1 b shows food or beverage precursor’s portions packed into a primary packaging, also called “flowpack” as an example embodiment.

Such flowpack is a flexible strip of packages 100 comprising at least two packages 30, 40, each comprising a cavity, for example between twenty and thirty packages, often about 24 packages, each cavity of them receiving one pearl of product, i.e. one portion of product as presented in Figure 1a.

A flowpack as described above can be easily wound in superimposed layers, with the portions of one package 30, 40 arranged in quincunx between two adjacent layers of the strip of packages 100, as shown in Figure 1 .

However, the storing pattern may vary depending on desired dimensions of a casing in which it should be stored.

Such wound strip of packages 100, or individual portions like portion 1 , or even loose product (not illustrated here), can then be packed in a casing according to the invention.

The casing is here shaped as a box with an overall parallelepipedal form. As illustrated in Figure 2 for example, it has a narrow rectangular bottom and top, two large side panels and narrower front and rear walls.

The casing is expected to ensure an optimized, or at least a certain level of barrier to protect the product so it is built in a tight manner. In particular, it allows to protect food and beverage products included in the casing from oxygen, moisture, humidity and/or other external possible aggressions, while also offering a mechanical shield to protect the products from impacts, vibrations or other constrains occurring along the life of the products.

In addition, at least a part of the casing, or all, is preferably made of at least a recyclable and/or recycled material, for example a biodegradable material, or even possibly a compostable material, preferably bio-sourced biodegradable or bio-sourced compostable material.

Consequently, its construction comprises preferably at most three parts: two side panels and one surrounding “belt”.

Those parts are bounded and/or linked together, preferably sealed together.

For example, three main embodiments can be considered, in which where the casing is made out of one, two or three parts.

1/ The casing can be made out of three parts (two side panels and one surrounding band). These three parts are sealed or glued together in a tight manner, as illustrated in Figure 6 for example. For this construction, the band can be overlapping, even by forming an external tongue, made out of the two ends of the band, sealed or glued together. Optionally, this tongue can then be folded by 90° and if necessary, can be crushed or flattened by a mechanical tool (with or without heat), as illustrated in Figure 8b for example. This step aims at closing the potential remaining leakage paths at this 3-points junction. Figure 8a shows another example embodiment in which both ends of the band are juxtaposed and the casing is sealed by an additional envelop wrapped around both ends.

2/ The casing can be made out of two parts: for example, both side panels are linked together and are fully assembled with the band. Such an embodiment is illustrated by Figures 2 to 5, and Figures 9 to 13.

3/ At last, in a most optimized version, the casing can be made out of only one part and/or pre-formed part, which is folded/bended and sealed or glued by a specific tooling and process in order to obtain a fully tight structure. Such an embodiment is not illustrated here.

This is enhanced by some specific functionalities of the base material (as its stretchability) and some specific pre-processing steps (like pre-cutting enabling a double curvatures of the material to ensure the junction at the rounded angles).

Some embodiments are described here below in connection with figures 2 to 12.

Figure 2 shows a casing 1000 for transporting food or beverage precursor’s portions, in a closed configuration in figure 2a, and in an open configuration in figure 2b. The casing 1000 comprises here two main parts: a side panel part 1200, and one band 1100 made from one sheet.

The side panel part 1200 is made from one sheet too, and comprises here two side panels 1201 , 1202 and a linking part 1203 between the two side panels 1201 , 1202 linking both side panels one to the other.

Thus here, both side panels are made from one sheet.

The side panel part is folded in a U-shape, with the linking part forming a bottom of the II.

To provide a tight casing, the side panel part 1200 is sealed to the band 1100 forming a flange 1300 extending outward.

Such flange 1300 comprises a sealing area of the band 1100 and a sealing margin of the side panel part 1200 which are sealed to each other.

Owing to such a flange 1300, it is possible to provide a casing, which can be made of paper-based material, in which a junction between two different parts can be tight.

Here, the band 1100 remains flat while the sealing margin of the side panel part 1200 is bent outward, and according to the illustrated embodiment, the sealing margin is folded perpendicularly compared to a side panel core (which is a part of the side panel surrounded by the sealing margin).

Furthermore, the casing is here provided with an opening system

1400. More specifically here, the band 1100 comprises said opening system 1400 which comprises an opening 1430 and closing element 1410 configured to close the opening 1430.

The opening 1430 (indicated in dotted line in Figure 2a as seen through the closing element 1410) is for example configured to pull food or beverage precursor out of the casing.

The closing element 1410 configured to close the opening 1430 is here a lid, or a cap.

The closing element is sealed in an airtight manner, for example glued, over the opening, on on a part of the band in which the opening 1430 is made.

For example, the closing element 1410 is a leaf. Such a leaf can be transparent and/or of any colour. It could also be of the same material as the band.

The closing element can be sealed before or after construction of the casing. The closing element can be applied to the band and sealed during sealing of the band to the side panels. For example, the closing element can be of a same width as the band and sealed to the sealing area of the band.

To ease the opening, the closing element 1410 can comprise a tip configured to be pulled by a user in order to peel the closing element off.

The opening system is preferably located nearby one corner of the casing.

In the embodiment of Figure 2a, a tip of the opening system 1400 is situated nearby a folded portion of the band 1100.

This construction as illustrated in Figure 2 generates for example two main physical specificities compared to a “traditional” not-tight casing:

- Rounded corners, for example with a radius of about 10 mm;

- two surrounded sealing flange 1300 (at least one on each side panel), for example with a width of about 4 mm.

The outer dimensions of the casing 1000 are for example 280 mm x 90 mm x 50 mm. These dimensions could change. The thickness of the material constituting the casing is for example about 0.3 mm. However, it can vary from 0.2 mm to 0.6 mm for example.

Figures 3 to 12 show different embodiments of casings.

On these figures, same numeral references are used to designate same features as in Figures 2a and 2b but starting by an incremented number “x— ” instead of “1— ”.

Figure 3a and 3b show an example embodiment of a casing 2000.

The casing 2000 differs from the casing 1000 of figures 2a and 2b in that the tip of the opening system 2400 is situated nearby an end of the band 2100, instead of a folded portion of the band and in that the opening system is different.

Such an embodiment can provide an easier take of the opening system by a user in order to open the casing, while keeping the casing tight when it is closed.

In this embodiment, the opening 2430 is similar to the opening 1430 of figure 2.

But, the closing element 2410 here comprises a pulling tongue which is demarcated by at least one pre-cut line delimiting the opening 2430.

A pre-cut here designates a cut performed in only a part of a thickness of the sheet.

Such a cut is for example a few microns deep to realise such pre-cut.

Such a pre-cut can be realised by means of a laser for example.

As shown in Figure 3a and 3b, a part of the pre-cut (corresponding to a rim of the wide part 2431 of the opening 2430) is formed in the sealing area of the band 2100 forming the flange 2300.

Thus, it keeps a full tightness of the casing before it is open.

According to one example embodiment, the closing element 2410 comprises a string, not shown. For example, the string can be embedded into a material layer of the sheet of the band 2100. By pulling on the closing element 2410, the base material of the band 2100 is teared along the pre-cut line, following the pre-defined shape of the opening 2430.

The casing thus has an easy opening system.

For example, once the casing is opened, the closing element 2410 may remain attached to the casing. Optionally, it is then locked on position.

Figure 4 show an example embodiment of a blank to form a band 2100’.

The band 2100’ comprises a length which is at least equal to a length of a peripheral free edge of one corresponding side panel.

For example, by definition, the length of the band extends along a length direction of the band, and the band comprises a width extending perpendicularly to the length direction of the band.

The band 2100’ is similar to the band 2100 of figure 3a, except in that the opening system 2400’ comprises closing element 2410’ defining the opening which here comprises only a main wide part 243V, but no tail.

Furthermore, as better visible in this figure; the band 2100’ comprises press-formed lines 2500’ configured to fold the band 2100’, in particular around a corner of a corresponding side panel.

Such press-formed lines 2500’ extends alongside the width direction of the band 2100’.

In addition, ends of the band 2100’ here have rounded shape; however, they could have square shapes, optionally with rounded comers, as band 2100 of figure 3a or band 1100 of figure 2a.

Figure 5 shows a blank for the side panel part 1200, or 2200, in which both side panels are made from one sheet.

Thus, numeral references of Figure 2 are indicated here, but same would apply with numeral references of Figure 3, as side panel parts of Figures 2 and 3 are identical.

The side panel part 1200 is of a rectangular shape with rounded corners. The side panel part 1200 comprises a peripheral free edge 1210 and a sealing margin 1220 along the peripheral free edge 1210.

Both side panel 1201 , 1202, said first side panel 1201 and second side panel 1202, comprise a free peripheral edge 1211 , 1212, and a sealing margin 1221 , 1222 along their respective free peripheral edges 1211 , 1212.

The linking part 1203 comprises two free edges 1213 on either side between the two side panels 1201 , 1202, and a sealing margin 1223 along its two free edges 1213.

The peripheral free edge 1211 , 1212 of each side panel 1201 , 1202 extends from one free edge 1213 of the linking part to the other.

Then, the peripheral free edge 1210 of the side panel part 1200 is here constituted by the peripheral free edge 1211 of the first side panel 1201 , the peripheral free edge 1212 of the second side panel 1202, and the peripheral free edges 1213 of the linking part 1203.

Same, the sealing margin 1220 of the side panel part 1200 is here constituted by the sealing margin 1221 of the first side panel 1201 , the sealing margin 1222 of the second side panel 1202, and the sealing margins 1223 of the linking part 1203.

The sealing margin 1220 of the side panel part 1200 is configured to be sealed to a sealing area of one band (either band 1100 of Figure 2a, or band 2100 of figure 3a or band 2100’ of figure 4, or others).

The sealing margin 1220 is configured to be bent outward (compared to at least one side panel core 1204, 1205 which is a part of the side panel 1201 , 1202 surrounded by the sealing margin 1221 , 1222 respectively) in order to form the flange 1300 as illustrated in Figure 2 (or in Figure 3).

To this end, the side panel part 1200 comprises a press-formed line 1207 which is parallel to the peripheral free edge 1210 of the side panel part.

Such press-formed line 1207 is formed for example a few millimetres at a distance from the peripheral free edge 1210 of the side panel part 1200, for example between 2 mm and 10 mm, thus forming the sealing margin 1220 between the peripheral free edge 1210 and the press-formed line 1207. Such press-formed line 1207 helps bending the sealing margin 1220 of the side panel part 1200 to later seal it to the band to forming the flange 1300 (visible Figure 2, or Figure 3).

Besides, the linking part 1203 comprises press-formed lines 1206 which are transverse to both free edges 1213 of the linking part 1203.

These press-formed lines ease folding the side panel part 1200 in the form of a II.

Furthermore, each corner of the side panel part 1200 here comprises notches 1208.

Additional notches 1208 are provided on edges 1213 of the linking part 1203 to help folding.

For example, a notch 1208 is a cut, like a V cut, made in a part of the sealing margin 1220.

Such notches enable to limit pleats, in particular where the flange surrounds a corner of the casing, as this may involve at least two curvatures of the part of the casing.

Thus, in general, notches 1208 may be provided anywhere more than one curvature shall be needed.

Therefore, such notches ease sealing of the side panel part and the band in comers in a tight manner as they help avoiding pleats when the sealing margin is folded around corners.

Figure 6 now shows an example embodiment of a casing 3000 which is formed of three parts: two side panels 3201 , 3202 and a surrounding band 3100. Such a casing measures for example about 260 mm x 160 mm x 46 mm.

In other words, the casing 3000 here comprises a side panel part 3200 which comprises two separated side panels, without linking part.

Both side panels 3201 , 3202 are identical.

They are of a rectangular shape with rounded comers, and each comprises a peripheral free edge (all around the side panel) and a sealing margin along the peripheral free edge. As in the embodiments above described, the sealing margin of each side panel is bent outward (compared to a side panel core, which is a part of the side panel 3201 , 3202 surrounded by the sealing margin) in order to form the flange 3300.

A band 3100, as one which can be used in the embodiment of Figure 6, is illustrated in Figure 7.

The band 3100 is of a rectangular shape, here with right angle comers.

The band 3100 comprises a length which is at least equal to a length of the peripheral free edge of the corresponding side panels, and preferably greater to allow the ends to overlap each other.

In case the band 3100 is connected end to end, without overlapping, its length is shorter that the length of the peripheral free edge of the corresponding side panels.

The band 3100 comprises four sets of press-formed lines 3500, extending alongside the width direction of the band 3100, configured to fold the band 3100 around the comers of the corresponding side panels.

The band 3100 further comprises an opening system 3400 which comprises closing element 3410, as a pulling tongue, and an opening which here comprises only a main wide part 3431 , as the band of Figure 4.

Here, the opening system 3400 is situated between two foldable zones, each of which is here formed by a set of press-formed lines 3500.

Figure 8 shows an example embodiment of a sealing of a band like band 3100 of figure 7, for a casing like casing 3000 of Figure 6.

When the band surrounds all side panels, the casing may still be tight.

One solution is to have the ends of the band overlapping.

One solution, as illustrated in Figure 8a, is to have the ends of the band joined end to end. In this case, an additional envelop 3130 can be added around both ends. Another solution, as illustrated in Figure 8b, the ends of the band are sealed one to the other by forming an external tongue, and then this tongue can then be folded to be flattened on the band, for example by 90°, by a mechanical tool, like for example rolls. This step aims at closing a potential remaining leakage path at such a 3-points junction.

Figure 9 shows a casing 4000 according to a fourth example embodiment of the invention.

This embodiment is similar to the embodiment of Figure 3, in particular as it is made of two main parts: a side panel part 4200 and one band 4100, made from one sheet.

The side panel part 4200 is made from the one sheet and comprises here two side panels 4201 , 4202 and a linking part 4203 between the two side panels 4201 , 4202 linking both side panels one to the other.

As before, the side panel part is folded in a U-shape, with the linking part forming a bottom of the II.

To provide a tight casing, the side panel part 4200 is sealed to the band 4100 forming a flange 4300 extending outward.

This embodiment differs from the one of Figure 3 mainly in that the linking part 4203 is narrower than the side panels 4201 , 4202. Therefore, both side panels and the linking part here define one recess between both side panels.

The band 4100 is similar to the band 2100’ of Figure 4, and comprises here an opening system 4400 which comprises a closing element 4410 as a pulling tongue and an opening which here comprises only a main wide part 4431 .

In this example embodiment, a tip of the opening system is situated nearby an end of the band 4100 which is in the recess between both side panels.

Figure 10 shows a casing 5000 according to a fifth example embodiment of the invention.

This embodiment only differs from the one of Figure 9 in that the band 5100, which is identical to the band 4100, is placed the other way. Then, the opening system 5400 is positioned nearby an edge of the linking part 5203 which is opposite the edge of the linking part in the recess between both side panels of the side panel part 5200.

Figure 11 shows a blank for the band 4100 (or 5100), as used in the casings of Figure 9 or Figure 10.

Thus, numeral references of Figure 9 are indicated here, but same would apply with numeral references of Figure 10, as the bands of Figures 9 and 10 are identical.

Here the band 4100 is made of one sheet and is of a rectangular shape with rounded ends.

In addition, it comprises the opening system 4400, a tip of which is situated at one end of the band.

Figure 12 shows a blank for the side panel 4200 (or 5200), as used in the casings of Figure 9 or Figure 10.

Thus, numeral references of Figure 9 are indicated here, but same would apply with numeral references of Figure 10, as the side panel parts of Figures 9 and 10 are identical.

The side panel part 4200 is made from the one sheet and comprises here a first side panel 4201 and a second side panel 4202 and a linking part 4203 between the two side panels 4201 , 4202 linking both side panels one to the other.

In this embodiment, the linking part 4203 is narrower than the side panels 4201 , 4202. Therefore, both side panels and the linking part here define one recess between both side panels, here on one side only of the linking part.

The side panels 4201 , 4202 are of a rectangular shape with three rounded corners.

The side panel part 4200 comprises a peripheral free edge 4210 and a sealing margin 4220 along the peripheral free edge 4210.

To ease folding of the sealing margin 4220 to later seal it to the band in order to form the flange 4300, the side panel part 4200 comprises a press- formed line 4207 which is parallel to the peripheral free edge 4210 of the side panel part. Such press-formed line 4207 is formed for example a few millimetres at a distance from the peripheral free edge 4210 of the side panel part 4200, for example between 2 mm and 10 mm, thus forming the sealing margin 4220 between the peripheral free edge 4210 and the press-formed line 4207.

Besides, each corner, including the recess, of the side panel part 4200 here comprises notches 4208.

For example, the notches 4208 are formed in the sealing margin 4220.

Such notches could also be added in the sealing margin of the linking part which is opposite the recess.

Such notches ease sealing of the side panel part 4200 and the band, for example band 4100, in corners in a tight manner as they help avoiding pleats when the sealing margin is folded around comers.

Thus, depending on the way of positioning the band 4100 of Figure 11 relatively to the side panel part 4200 of Figure 12, either casing 4000 of Figure 9 or casing 5000 of Figure 10 is obtained.

Figure 13 shows method steps for manufacturing a casing according to one example embodiment of the invention.

For the example, numeral references of Figure 2 are used, but same would apply to the other embodiments.

In Figure 13a, a blank for a side panel part 1200 comprising at least two side panels 1201 , 1202, and a blank for a band 1100 is provided.

For example, the method comprises a step of bending outward a sealing margin of a first side panel 1201 in order to form a flange 1300 in which the band 1100 shall be sealed.

One step then comprises here sealing at least a part of the band 1100 on at least a part of the sealing margin of the first side panel 1201 , and here on all sealing margin of the first side panel, forming a part of the flange 1300 extending outward.

For example, the method comprises a step of folding the band 1100 about at least one press-formed line to position the band 1100 around one corner of the first side panel 1201 . Another step comprises placing product, either portions of a strip of packages 100 like illustrated here, on the first side panel 1201 , which is surrounded at least in part by the band 1100.

For example, the strip of packages 100 is wound as illustrated in Figure 1 b.

In Figure 13b, the method comprises a step of folding the side panel part 1200 made of one sheet into a II about the linking part 1203, or preferably about at least one press-formed line of the linking part 1203.

The method also comprises a step of sealing the linking part 1203 of the side panel part 1200 to the ends of the band 1100.

In Figure 13c, the method comprises a step of completing the sealing of the side panel part 1200 with the band 1100, in particular sealing the band 1100 with the sealing margin of the second side panel 1202, finalizing forming the flange 1300 extending outward.

In case the casing is receiving individual portions 1 not packaged in a flowpack, the individual portions are directly inserted in the casing. Spacers or interlayers may be added in the casing to separate and/or preserve the integrity of the individual portions, thereby defining a storing pattern. This embodiment is not represented.

In any case, the final closing of the casing is done under controlled atmosphere, in order to avoid entrance of oxygen that would have oxidizing and/or damaging effects on the product or precursor portions, especially in terms of preservation.

Figure 14 shows an example embodiment of a food or beverage preparation apparatus 300 using a flowpack of packaged individual portions 1 .

Such apparatus may be mainly as one described in WO 2019/219523 or WO 2019/219524.

The apparatus comprises a seat to receive a casing as described above, with the opening of the casing close to a portion removing assembly of the apparatus. The portion removing assembly preferably comprises a portion capturing rotary drum 301 driven in rotation in a stepwise fashion by a driving assembly.

The portion capturing rotary drum comprises a plurality of receiving holes 302 formed in an outer annular wall 303 of the drum 301 .

The receiving holes 302 are individually dimensioned and arranged at distance one another so as to match with the distance d between neighboring packages 30, 40 of the strip of packages 100.

As the portions are captured by the receiving cavities moving step- wisely, the strip of packages 100 is progressively withdrawn from the casing.

The apparatus 300 further comprises package opening means 304 such as a cutting tool arranged for opening the cavities of one package by cutting along one cutting line in at least one side of one package to remove each portion individually. The cutting tool may be driven by a linear motorized actuator configured for moving the cutting tool reciprocally between a retracted position and a cutting position. The cutting tool may be formed as a cylinder of diameter slightly larger than the diameter of one beverage portion and may comprise at least one blade arranged circumferentially on the free edge of the cylinder. Preferably, the cutting tool is arranged to cut the strip of packages 100 on at least 200° or preferably between 300 and 340° about the portion to provide sufficient opening of the cavity and facilitate ejection of the portion while keeping the package material in one piece.

The apparatus 300 may further comprise portion ejection means 305 for expulsing the portion from the cavity after the package is cut open. The portion ejection means 305 may take various forms. In the illustrated example, the portion ejection 305 means comprise a cam which is stationary arranged on an internal bearing which is arranged co-centrically relative to the rotary drum 301 . The cam is preferably positioned angularly, e.g. an angle of 50-80 degrees after the cutting tool, to push the portion outside the corresponding cavity as the drum 301 rotates (as illustrated in Figure 14 in clockwise direction R).

The apparatus 300 may further comprise a chute or the like, arranged for gently receiving and transporting by gravity or otherwise (e.g. air pressure), the portion to a food or beverage preparation device to prepare the food or beverage.

Then, the apparatus 300 preferably comprises at least one container to receive the used package material on one side and the organic residue (food or beverage precursor portion after use) on another side, which eases recycling and composting of waste.

Claims

34 CLAIMS

1. Casing (1000) for transporting food or beverage product, the casing (1000) being characterised in that it comprises:

- a side panel part (1200) comprising at least two side panels (1201 , 1202), each side panel comprising a peripheral free edge (1211 , 1212) and a sealing margin (1221 , 1222) along the peripheral free edge, and

- one band (1100), made from one sheet, and comprising a sealing area, the sealing area of the band (1100) being sealed to the sealing margin (1221 , 1222) of both side panels, forming a flange (1300) extending outward.

2. Casing (1000) according to claim 1 , characterised in that the side panel part (1200) is made of one sheet which comprises the two side panels (1201 , 1202) and a linking part (1203) between the two side panels linking both side panels one to the other, the side panel part (1200) is folded in a U-shape and the linking part forms a bottom of the II, the linking part (1203) further comprising two free edges on either side between the two side panels, and a sealing margin along its two free edges, the peripheral free edge of each side panel extending from one free edge of the linking part to the other, and the band (1100) being sealed to the sealing margin of both side panels, and to the sealing margin of both free edges of the linking part, forming the flange (1300) extending outward.

3. Casing (1000) according to any of claims 1 or 2, characterised in that it comprises an opening system (1400) comprising at least one opening (1430) and a closing element (1410) configured to close the opening (1430).

4. Casing (1000) according to claim 3, characterised in that it comprises a pre-cut line demarcating the closing element (1410) and/or the opening (1430). 35

5. Casing (1000) according to claim 4, characterised in that at least a part of the pre-cut line is done in the sealing area of the band (1100) in which the band is sealed to at least the sealing margin of one side panel (1201 , 1202).

6. Casing (1000) according to any of claims 1 to 5, characterised in that the flange (1300) comprises at least one notch (1208) formed in at least a part of the flange surrounding a corner of the casing.

7. Casing blank to manufacture a casing (1000) according to any of claims 1 to 6, the casing blank comprising:

- a side panel part (1200) comprising at least two side panels (1201 , 1202), configured to build the two side panels of the casing, each side panel comprising a peripheral free edge and a sealing margin along the peripheral free edge which is configured to be bent outward to form a flange, and

- one band (1100), made from one sheet, comprising a sealing area configured to be sealed to at least the sealing margin of both side panels.

8. Casing blank according to claim 7, characterised in that the side panel part (1200) is made of one sheet which comprises the two side panels (1201 , 1202) and a linking part (1203) between the two side panels linking both side panels one to the other.

9. Casing blank according to any of claims 7 or 8, characterised in that it comprises an opening system (1400) comprising at least one opening (1430).

10. Casing blank according to claim 9, characterised in that the opening system (1400) further comprises at least a closing element (1410) configured to close the opening (1430), and a pre-cut line demarcating the closing element (1410) and/or the opening (1430).

11. Casing blank according to claim 10, characterised in that at least a part of the pre-cut line is done in the sealing area of the band (1100) in which the band is configured to be sealed to at least the sealing margin of one side panel.

12. Casing blank according to any of claims 7 to 11 , characterised in that at least one of the side panels (1201 , 1202) comprises a press-formed line (1207) which is parallel to at least one peripheral free edge (1211 , 1212) of the side panel, and which is formed a few millimetres at a distance from the peripheral free edge (1211 , 1212) of the side panel, thus forming the sealing margin (1221 , 1222) between the peripheral free edge (1211 , 1212) and the press-formed line (1207).

13. Casing blank according to any of claims 7 to 12, characterised in that at least one of the sealing margin (1220) of one side panel (1201 , 1202) or the sealing area of the band (1100) comprises at least one notch (1208) in at least a part configured to surround a corner.

14. Method for manufacturing a casing according to any of claims 1 to 6, comprising steps of:

- providing a blank according to any of claims 7 to 13;

- sealing a sealing area of the band (1100) on at least a part of the sealing margin (1221 , 1222) of a first of the two side panels (1201 , 1202), forming at least a part of the flange (1300) extending outward;

- placing product on the first side panel;

- sealing a sealing area of the band (1100) along the sealing margin (1221 , 1222) of a second of the two side panels (1201 , 1202), finalizing forming the flange (1300) extending outward.

15. Method according to claim 14, comprising a step of folding a sealing margin (1221 , 1222) of at least one of the side panels (1201 , 1202) along a corresponding press-formed line (1207) which is parallel to at least a part of the peripheral free edge (1211 , 1212) of the side panel in order to form at least a part of the flange (1300).

16. Method according to any of claims 14 or 15, further comprising steps of:

- folding the side panel part (1200) made of one sheet into a II about the linking part (1203); - sealing the linking part (1203) of the side panel part to at least one end of the band (1100); and

- completing sealing a sealing area of the band (1100) along a sealing margin (1221 , 1222) of the side panel part (1201 , 1202).