EP4164957A1

EP4164957A1 - A blank and a package

Info

Publication number: EP4164957A1
Application number: EP21821585.3A
Authority: EP
Inventors: Per-Anders KARLSSON
Original assignee: Stora Enso Oyj
Current assignee: Stora Enso Oyj
Priority date: 2020-06-12
Filing date: 2021-06-11
Publication date: 2023-04-19
Also published as: CN116137852A; JP2023529919A; KR20230024372A; CL2022003523A1; WO2021250623A1; EP4164957A4; SE2050708A1

Abstract

A package and a blank configured to be erected into a package, the blank comprising: a bottom panel 10, an inner front wall panel 21 and a rear wall panel 22, a first and a second inner side wall panel 31, 32, a lid panel 80 being foldably connected to the rear wall panel 22, an outer front wall panel 41 foldably connected to the inner front wall panel 21, a first and a second outer side wall panel 61, 62 foldably connected to the first respectively to the second inner side wall panel 31, 32, wherein the outer front wall panel 41 is configured to be adhesively connected to the inner front wall panel 21 and form a double-walled front wall when the blank is erected into a package, and wherein the first and the second outer side wall panels 61, 62 are configured to be adhesively connected to the respective inner side wall panel 31, 32 and form double-walled side walls when the blank is erected into a package.

Description

A BLANK AND A PACKAGE

Technical field

The invention relates to a blank configured to be erected into a package. The invention also relates to a package. The blank and package are specifically designed to be provided with a moisture resistant inside. Such a package may e.g. be used to hold wet products, such as wet food products, such as meat, vegetables or fish.

Technical background

When designing a package for transport of products, it is desirous to take into account a number of different design criteria. The package should e.g. make efficient use of the material, be easy to transport to the point of use, be easy to prepare for use, and it should provide a strong package. The package should be capable of protecting the goods transported in the package. It should be strong during handling and it should typically be capable of carrying other packages such that they may be stacked on top of each other. When designing a package for transport of wet food products, such as meat, vegetables or fish, it is often a difficulty to make the package capable of remaining mechanically stable over a sufficient time period. In packages formed of cardboard or paper-based materials, the packages often lose their mechanical stability due to moisture soaking into the material whereby the cardboard or paper-based material becomes softer than they are in their dry condition.

An example of a package formed by folding a blank is disclosed in GB1424712A. The document discloses a discloses a blank which is coated with moisture impervious material and which is erected to form a carton by folding the corner gussets against the outer faces of the side walls, folding the side wall flaps over the gussets and then folding the front flap inwards to overlie the base panel. Each end of the flap is connected to the adjacent corner gusset by a fillet which interlocks with the adjacent end of a side flap. A notch in each flap provides an edge against which the fillet abuts. Another example of a package formed by folding a blank is disclosed in EP0455610A1. This document refers to a leakage-proof container for ice cream or any other product, in various capacities, made in paperboard eventually treated on one side to be resistant to the penetration of water, oil or grease, depending upon the type of products contained in it. The container is made of a single paperboard blank cut and folded into a container body and a dependant hinged lid. The sides of the container body are interconnected by gusset folds in order to make them leakproof. The lid is provided with three side flaps which are glued to the corresponding side panels of the container body and are severable therefrom along pre-cut tearing strips to gain access to the contents. After the first opening, the container can be reclosed using a tong insertable into a slit.

Thus, there is still a need to provide an improved concept of providing a package which from a manufacturing and from a user perspective, address one or more of the design criteria of making efficient use of material, being possible to transport as flat-laid blanks, being easy to erect to form the package, being capable of forming a package being stable and stackable when in use, and being capable of providing a lid. Moreover, there is a need om providing a package for wet content that remains mechanically stable over a sufficient time period. Preferably, this should be accomplished with a minimal use of adhesive, and especially preferably without the need for application of an adhesive at the site of use. Preferably, this should be accomplished without the need of tools.

Summary of the invention

It is an object of the invention to provide a blank and a package addressing at least some of the design criteria that the blank and package should make efficient use of the material, be easy to transport to the point of use, be easy to prepare for use, and it should provide a strong package capable of protecting the goods transported in the package. Preferably it should also be strong during handling and it should typically be capable of carrying other packages such that they may be stacked on top of each other. Preferably, it remains mechanically stable over a sufficient time period, especially it is desirous that the package is stable also when holding wet products, such as wet food products, such as meat, vegetables or fish.

This object has in accordance with a first aspect been achieved by a blank configured to be erected into a package. The blank comprises a bottom panel, an inner front wall panel and a rear wall panel. The inner front wall panel and the rear wall panel are foldably connected to a respective one of two opposing longitudinally extending sides of the bottom panel. The blank further comprises a first and a second inner side wall panel. Each inner side wall panel is foldably connected to a respective one of two opposing transversely extending sides of the bottom panel. The blank further comprises a lid panel. The lid panel is foldably connected to the rear wall panel along a longitudinally extending side opposite to the longitudinally extending side of the rear wall panel being connected to the bottom panel. The blank further comprises an outer front wall panel. The outer front wall panel is foldably connected to the inner front wall panel along a longitudinally extending side opposite to the longitudinally extending side of the inner front wall panel being connected to the bottom panel. The blank further comprises a first and a second outer side wall panel. The first and the second outer side wall panel are foldably connected to the first respectively to the second inner side wall panel along a transversely extending side opposite to the transversely extending side of the respective inner side wall panel being connected to the bottom panel.

The outer front wall panel of the blank is configured to be adhesively connected to the inner front wall panel. The outer front wall panel of the blank is further configured to form a double-walled front wall when the blank is erected into a package.

The first and the second outer side wall panels of the blank are configured to be adhesively connected to the respective inner side wall panel. The first and the second outer side wall panels of the blank are further configured to form double-walled side walls when the blank is erected into a package. With a blank of the kind disclosed above, it is possible to provide a single blank being configured to be erected into a package having a lid. The attachment of the lid panel prevents accidental loss of the panel during transport and/or storage. Moreover, having the lid attached facilitates the handling of the package. As the person handling the package does not need to hold the lid while the package is opened, the person has free hands to handle the content of the package. Thus, it is possible to hold the package in one hand and have the other hand free. Further, the lid attachment makes is possible to manage the content of the package in a hygienical way. In detail, the person handling the package may open the lid without contaminating of the inside surface and/or content of the package.

Furthermore, the design of the blank allows a minimal use of adhesive. Moreover, there is no need of special tools and/or skills to form the package of the blank. It is further to be noted that the blank, configured to be erected into the package, is easy to transport and store being a flat-laid blank when unfolded.

The double-walled front and side walls provide a strong package capable of being stacked. Moreover, such a design is beneficious in view of protecting packages from losing their mechanical stability due to moisture soaking into the material.

Through-out the description the phrase transversal side or transversal edge relates to a side or edge encountered when moving along the transverse direction and the phrase longitudinal side or longitudinal edge relates to a side or edge encountered when moving along the longitudinal direction. For a rectangular panel a transversal side or edge will be positioned on a side as seen along the transverse direction and will have an extension along the longitudinal direction and a longitudinal side or edge will be positioned on a side as seen along the longitudinal direction and will have an extension along the transverse direction.

At each corner of the bottom panel, the respective inner side wall panel may be interconnected with the inner front wall panel respectively the rear wall panel by a respective set of corner panels, the corner panels of respective set of corner panels being foldable relative to the respective inner side wall panel, to the inner front wall panel or the rear wall panel, and to each other about an internal fold line into triangular flaps, as the blank is erected into the package. This is a convenient manner of making it possible to provide a package having closed corners. This may be especially useful in combination with a polymer-coating on the major surface intended to form an inside of the package. Such a package may e.g. be useful to transport moist food products, such as fish, meat, etc.

The triangular flaps may be configured to be folded outwardly, and preferably outwardly into abutment with an outwardly facing surface of the inner side wall panel. This is a convenient manner of making it possible to provide a package having tight and protected corners, such that the corners are not affected by moisture of the content in the package. Such a design is beneficious in view of protecting packages from losing their mechanical stability otherwise typically occurring due to moisture soaking into the material. The content is prevented from being soaked into the corner panels as the corner panels are placed at outside of the package. Such formed corners are, thus, beneficial as they contribute to robustness of the package by remaining unaffected by the content. This may be especially useful in combination with a polymer-coating on the major surface intended to form an inside of the package. Such a package may e.g. be useful to transport moist food products, such as fish, meat, etc. Further, as the abutment between the corner panels and the side wall panel is positioned on the outside of the package, it does not come in contact with the content of the package. Moreover, abutting the triangular flaps to the outside surface of the inner side wall panels of the package, increases the overall stability of the package. The double-walled side walls, comprising the inner and the outer side wall panels, increase in stability due to the fact that it also includes the triangular flaps, since the overall thickness of the double-walled side walls increases. Thus, this contributes to making the package capable of carrying load on top of the package, which e.g. occurs when packages are stacked on top of each other. The blank further may further comprise a locking tongue being foldably connected to and extending outwardly from the lid panel in a transverse direction, as seen in a flat-laid state of the blank, and a slit formed in the double-walled front wall, wherein the locking tongue may be configured to be inserted into the slit and thereby keep the lid panel in a closed position of the package. The slit may be pre-cut in the blank. The slit may be indicated in the blank by perforation lines defining a slit portion, wherein the slit portion is intended to be teared off or opened along a perforation line, e.g. when the blank is erected into the package. The locking tongue may be attached to the lid panel, such as by providing an adhesive portion on the locking tongue and/or on the lid panel. The locking tongue may have, as seen along the transverse direction, a longitudinally extending central waist portion close to the lid panel followed by a longitudinally wider locking portion arranged at a distance from the lid panel. This is a convenient manner of providing a locking functionality which counter-acts accidental removal of the locking tongue from the slit. In more detail it may be said that the slit may have a longitudinal extension being between the longitudinal extension of the longitudinally extending central waist portion and the longitudinal extension of the longitudinally wider locking portion. Further, the locking tongue attachment makes is possible to manage the content of the package in a hygienical way. In detail, the person handling the package may open the lid without contamination of the inside surface and/or content of the package by touching the outside surface of the locking tongue.

The blank may further comprise a front top panel between the inner and the outer front wall panels, the front top panel being configured to form an upper surface of the double-walled front wall panel, wherein the slit may be formed in the front top panel. Providing such a front top panel contributes to making the package capable of carrying other packages such that they may be stacked on top of each other. It may be noted that it is conceivable to provide the front top panel as disclosed without the front top panel being provided with a slit. However, it is preferred that the front top panel is provided with a slit. Moreover, the top front panel may ease inserting of the locking tongue in such a slit by providing a distance between the inner and the outer front wall panel. Such a distance is also preferable in view of providing temperature isolation to the content of the package.

Each outer side wall panel may comprise a transversely protruding portion, the transversely protruding portion extending as seen in a transverse direction past a geometrical extension of a folding line between the bottom panel and the inner front wall panel, as seen in a flat-laid state of the blank. Such a transversely protruding portion is advantageous for several reasons. It may be used to protect the front corners of the package from damage by covering them, thereby making the package more durable. Covering the corners is also preferable in view of providing temperature isolation to the content of the package since covering the corners will result in an enclosure being formed. Covering the corners is also advantageous from a hygienic perspective.

The outer front wall panel may be configured to be adhesively connected to the inner front wall panel at an adhesion portion of the outer front wall panel, the adhesion portion forming part of an end portion of the outer front wall panel, as seen along the transverse direction.

The adhesion portion may be provided in different shapes and sizes. It may comprise a single adhesive portion. It may comprise a plurality of adhesion portions. The adhesion portion may be placed at the transversal edge of the outer front wall panel. However, the adhesion portion may be placed at a distance from the transversal edge of the outer front wall panel as seen along the transverse direction. In any case it is preferred that the adhesion portion is positioned such that it forms part of an end portion of the outer front wall panel as seen in a transversal direction. It is preferred that the adhesion portions extend almost to the transversal edge of the outer front wall panel and that only a small distance sufficient to facilitate production is left without an adhesion portion. The one or more adhesion portions may be arranged along a straight line, thus forming a continuous or intermittent line. The one or more adhesion portions may be arranged along lines having other shapes than straight lines. The adhesion portions may be positioned along a single line as seen along the transverse direction. The adhesion portions may be positioned along a plurality of lines as seen along the transverse direction.

It may also be noted that the adhesion portions need not extend to the longitudinal edges of the of the outer front wall panel. However, it is preferred that the adhesion portions extend almost to the longitudinal edges of the outer front wall panel and that only a small distance sufficient to facilitate production is left without an adhesion portion. Irrespective of the design of the adhesion portion it is preferred that the adhesion portion of the outer front wall panel is adhesively connected to a portion of the inner front wall panel being configured to form a lower part of the double-walled front wall of the package.

Such an adhesive connection is beneficial due to making efficient use of the material, as no extra locking mechanisms are needed. Moreover, such an adhesive connection makes the package easy to prepare for use. Further, by adhesion of the outer front wall panel to the inner front wall panel, a strong package is provided.

The attachment of the outer front wall panel to the inner front wall panel may be provided by adhesive, such as hot-melt glue. Further, it may be provided by use of an adhesive tape. The adhesive tape may be an adhesive double-sided tape between the outer front wall panel and the inner front wall panel. The attachment may be provided by an adhesive strip. The adhesive strip may be pre-attached during manufacturing process. Such pre-attached adhesive strip is preferably adhesively double-sided strip with the exposed surface being covered by a non-adhesive strip, such as paper strip. The adhesive strip may be an unmounted strip. The unmounted strip may, for example, be sold/provided separately and/or be attached as a separate unit when sold/provided. The adhesive strip may be attached to the outside surface of the outer front wall panel and/or on the inner front wall panel.

The outer side wall panels may be configured to be adhesively connected to the respective inner side wall panel at an adhesion portion of the respective outer side wall panel, the adhesion portion forming part of an end portion of the respective outer side wall panel as seen along a longitudinal direction. Preferably, the adhesion portion of the respective outer side wall panel may be adhesively connected to a portion of the respective inner side wall panel being configured to form a lower part of the respective double-walled side wall of the package.

The adhesion portion may be provided in different shapes and sizes. It may comprise a single adhesive portion. It may comprise a plurality of adhesion portions. The adhesion portion may be placed at the transversal edge of the outer side wall. However, the adhesion portion may be placed at a distance from the transversal edge of outer side wall panel as seen along the longitudinal direction.

Alternatives and various embodiments of such an adhesion portion has been discussed with reference to the adhesion portion between the outer front wall panel and the inner front wall panel and that disclosure is equally applicable to the adhesion portions between the outer side wall panels and the respective inner side wall panel.

The blank may further comprise a side top panel between the respective inner and the outer side wall panels, the side top panel being configured to form an upper surface of the respective double-walled side wall. Providing such a side top panel contributes to making the package capable of carrying other packages such that they may be stacked on top of each other. Moreover, such side top panels provide support to the lid.

The blank may be formed of a paper-based material. Such a material is typically light-weight. It is also typically easy to cut into the desired blank configuration and easily foldable and thereby easy to erect into a package. A paper-based material is often possible to recycle which makes it possible to provide an environmentally friendly package. Moreover, paper-based material belongs to a comparably inexpensive group of materials.

The blank may be provided with a polymer-based layer on a first major surface of the blank, the first major surface being intended to form an inside of the package when the blank is erected into the package. Such a package may e.g. be useful to transport moist food products, such as fish, meat, etc.

According to a second aspect, the above object has also been achieved by a package comprising: a bottom panel, an inner front wall panel and a rear wall panel, the inner front wall panel and the rear wall panel being foldably connected to a respective one of two opposing longitudinally extending sides of the bottom panel, a first and a second inner side wall panel, each inner side wall panel being foldably connected to a respective one of two opposing transversely extending sides of the bottom panel, a lid panel being foldably connected to the rear wall panel along a longitudinally extending side opposite to the longitudinally extending side of the rear wall panel being connected to the bottom panel. The package preferably also comprises an outer front wall panel foldably connected to the inner front wall panel along a longitudinally extending side opposite to the longitudinally extending side of the inner front wall panel being connected to the bottom panel. The package may further comprise a first and a second outer side wall panel foldably connected to the first respectively to the second inner side wall panel along a transversely extending side opposite to the transversely extending side of the respective inner side wall panel being connected to the bottom panel. The outer front wall panel may be adhesively connected to the inner front wall panel and form a double-walled front wall of the package. The first and the second outer side wall panels may be adhesively connected to the respective inner side wall panel and form double-walled side walls of the package.

In short, the invention may be said to relate to a blank configured to be erected into a package, the blank comprising a bottom panel, an inner front wall panel and a rear wall panel, a first and a second inner side wall panel, foldably connected to a respective opposing transversely extending sides of the bottom panel, a lid panel, an outer front wall panel, a first and a second outer side wall panel, wherein the outer front wall panel is configured to be adhesively connected to the inner front wall panel and form a double-walled front wall when the blank is erected into a package, and wherein the first and the second outer side wall panels are configured to be adhesively connected to the respective inner side wall panel and form double-walled side walls when the blank is erected into a package. A further scope of applicability of the present invention will become apparent from the detailed description given below. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the scope of the invention will become apparent to those skilled in the art from this detailed description. Hence, it is to be understood that this invention is not limited to the particular component parts of the device described or acts of the methods described as such device and method may vary. It is also to be understood that the terminology used herein is for purpose of describing particular embodiments and is not intended to be limiting.

It must be noted that, as used in the specification and the appended claims, the articles "a," "an," "the," and "said" are intended to mean that there are one or more of the elements unless the context clearly dictates otherwise. Thus, for example, reference to "a unit" or "the unit" may include several devices, and the like. Furthermore, the words "comprising", “including”, “containing” and similar wordings does not exclude other elements or steps.

Brief description of the drawings

The above and other aspects of the present invention will, in the following, be described in more detail with reference to appended figures. The figures should not be considered limiting; instead they should be considered for explaining and understanding purposes. As illustrated in the figures, the sizes of layers and regions may be exaggerated for illustrative purposes and, thus, are provided to illustrate the general structures. Like reference numerals refer to like elements throughout. The invention will by way of example be described in more detail with reference to the appended schematic drawings, which shows a presently preferred embodiment of the invention.

Figures 1 and 2 disclose a blank configured to be erected into a package. Figures 3-5 disclose different stages of how the blank of Figures 1 and 2 is erected into a package. Figure 5 discloses an almost completely erected package 2 with the lid panel being in an open state.

Figures 6 and 7 disclose a package 2 with the lid panel being in a partially open state.

Figures 8 and 9 disclose the package 2 with the lid panel being in a closed state.

Detailed description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and to fully convey the scope of the invention to the skilled person.

With reference to Figures 1 and 2, there is disclosed a blank 1 configured to be erected into a package 2, such as by being erected in the manner as disclosed in Figures 3-5. Figure 5 discloses an almost completely erected package 2 with the lid panel being in an open state. Figures 6 and 7 disclose a package 2 with the lid panel being in a partially open state.,

As illustrated in Figures 1 and 2, the blank 1 comprises: a bottom panel 10, an inner front wall panel 21 and a rear wall panel 22, wherein the inner front wall panel 21 and the rear wall panel 22 are foldably connected to a respective one of two opposing longitudinally extending sides of the bottom panel 10. The bottom panel 10 constitutes the bottom of the package 2. The bottom of the package 2 is the part typically being horizontal to the ground. The blank 1 may further comprise a first and a second inner side wall panel 31 , 32, wherein each inner side wall panel 31 , 32 is foldably connected to a respective one of two opposing transversely extending sides of the bottom panel 10. The longitudinal direction L and the transverse direction T are indicated in Figure 1. The blank 1 further comprises a lid panel 80 being foldably connected to the rear wall panel 22 along a longitudinally extending side opposite to the longitudinally extending side of the rear wall panel 22 being connected to the bottom panel 10. The blank 1 further comprises an outer front wall panel 41 foldably connected to the inner front wall panel 21 along a longitudinally extending side opposite to the longitudinally extending side of the inner front wall panel 21 being connected to the bottom panel 10. The blank 1 further comprises a first and a second outer side wall panel 61 ,

62 foldably connected to the first respectively to the second inner side wall panel 31 , 32 along a transversely extending side opposite to the transversely extending side of the respective inner side wall panel 31 , 32 being connected to the bottom panel 10. In other words, the respective first and second inner side wall panel 31 , 32 is at one transversely extending side thereof connected to the bottom panel 10 and is at the opposite transversely extending side thereof connected to the respective first and second outer side wall panel 61 , 62. The outer front wall panel 41 is configured to be adhesively connected to an outwardly facing surface of the inner front wall panel 21 and form a double-walled front wall when the blank 1 is erected into a package 2. The first and the second outer side wall panels 61 , 62 are configured to be adhesively connected to an outwardly facing surface of the respective inner side wall panel 31 , 32 and form double-walled side walls when the blank 1 is erected into a package 2.

As is best shown in Figures 1-3, at each corner of the bottom panel 10, the respective inner side wall panel 31 , 32 is interconnected with the inner front wall panel 21 respectively the rear wall panel 22 by a set of corner panels 91a, 91b, the corner panels 91a, 91b being foldable relative to the respective inner side wall panel 31 , 32, to the inner front wall panel 21 or the rear wall panel 22, and to each other about an internal fold line FL91 into triangular flaps as the blank 1 is erected into the package 2. As is best shown in Figure 4, the triangular flaps are preferably configured to be folded outwardly, and more preferably outwardly into abutment with an outwardly facing surface of the inner side wall panel 31 , 32.

As evident from Figures 1-7, the blank 1 may further comprise a locking tongue 81 being foldably connected to and extending outwardly from the lid panel 80 in a transverse direction T, as seen in a flat-laid state of the blank 1. The locking tongue 81 may have another shape than disclosed in figures 1-7.

As evident from Figures 1-5, the blank may further comprise a slit 42 formed in the double-walled front wall, wherein the locking tongue 81 is configured to be inserted into the slit 42 and thereby keep the lid panel 80 in a closed position of the package 2.

As illustrated in Figures 1 ,2,3 and 5, the blank 1 may further comprise a front top panel 50 between the inner and the outer front wall panel 41 , the front top panel 50 being configured to form an upper surface of the double-walled front wall panel, wherein the slit 42 is formed in the front top panel 50.

As evident from in Figures 1 and 2, the front top panel 50 is an extension the inner front wall panel 21 in the transverse direction T and is defined by two fold lines: the fold line FL25 between inner front wall panel 21 and the front top panel 50, and a fold line FL54 between the front top panel 50 and the outer front wall panel 41. The fold lines FL25 and FL54 may be separated at a distance d to take into account the thickness of the material of the blank 1. The distance d may by larger than triple a thickness of the material of the blank 1 in case the locking tongue 81 is wide enough or if the corner panels 91a, 91b are large enough such that the locking tongue 81 and corner panels 91a, 91b risk interfering with each other as seen along the longitudinal direction. The distance d may by larger than double a thickness of the material of the blank 1 in case the locking tongue 81 and the corner panels 91a, 91b do not risk interfering with each other. The slit extension in the transverse direction T, as seen in flat-laid state of the blank 1 , may be shorter than the distance d. The slit extension in the transverse direction T, as seen in flat-laid state of the blank 1 , may be as large as the distance d. Preferably, the slit extension in the transverse direction T is about the same as the material thickness of the locking tongue 81.

As evident from figures 1, 2, 3 and 7, each outer side wall panel 61 , 62 comprises a transversely protruding portion 64, the transversely protruding portion 64 extending as seen in a transverse direction T opposite the transverse direction T past a geometrical extension of a folding line FL12 between the bottom panel 10 and the inner front wall panel 21. The transversely protruding portion may benefit lifetime of the package 2 due to the space between the edges of the outer front wall panel 41 and the inner front wall panel 21 , seen at the front corners of package 2, is covered or closed by the transversely protruding portion 64.

As evident from figure 6, the outer front wall panel 41 may be adhesively connected to the inner front wall panel 21 at an adhesion portion 44 of the outer front wall panel 41 , the adhesion portion forming part of an end portion of the outer front wall panel 41 as seen along the transverse direction T, preferably such that the adhesion portion 44 of the outer front wall panel 41 is adhesively connected to a portion of the inner front wall panel 21 being configured to form a lower part of the double-walled front wall of the package. It may be noted that the outer front wall panel 41 and the inner front wall panel 21 may differ in length and/or height; as design which is not disclosed in Figures 1-9. The outer front wall panel 41 may e.g. be shorter than the inner front wall panel 21 as seen in the transversal direction T and/or as seen in the longitudinal direction L.

As evident from figures 6-7, the outer side wall panels 61 , 62 may be configured to be adhesively connected to the respective inner side wall panel 31 , 32 at an adhesion portion 64 of the respective outer side wall panel, the adhesion portion 64 forming part of an end portion of the respective outer side wall panel as seen along a longitudinal direction L, preferably such that the adhesion portion 64 of the respective outer side wall panel 61 , 62 is adhesively connected to a portion of the respective inner side wall panel 31 , 32 being configured to form a lower part of the respective double-walled side wall of the package 2.

As illustrated in Figures 1 and 5, the blank may further comprise a side top panel 51 , 52 between the respective inner and the outer side wall panels 31 , 32, 61 , 62, the respective side top panel 51 being configured to form an upper surface of the respective double-walled side wall. The side top panel 51 ,52 may be said to be an extension the inner wall panel 31 , 32 in the longitudinal direction L and is defined by two fold lines: the fold line FL35 between the inner wall panel 31 , 32 and the side top panel 51 ,52, and a fold line FL56 between the a side top panel 51 ,52 and the outer side wall panel 61 , 62. The fold lines FL35 and FL56 may be separated at a distance to take into account the thickness of the material of the blank 1.

Thus, the triangular flaps formed by the folding of the corner panels 91a, 91b may be positioned between the panels forming the respective double-walled side wall of the package 2. Thereby, a mechanical lock is provided configured to further hold the triangular flaps in place and prevent them from being unintentionally unfolded. Each bottom triangular flap 91a,

91b may have another shape than disclosed in figure 1. The outer side wall panels 61 ,62 and the respective inner side wall panel 31 , 32 may differ in length and/or height; a design which is not disclosed in Figures 1-9. The outer side wall panels 61 , 62 may e.g. be shorter than the inner side wall panels 31 , 32 as seen in the transversal direction T and/or as seen in the longitudinal direction L.

The blank 1 is preferably formed of a paper-based material. The blank 1 may be provided with a polymer-based layer on a first major surface 1a of the blank 1 , the first major surface 1a being intended to form an inside of the package 2. Such a package 2 may e.g. be useful to transport moist food products, such as fish, meat, etc.

As shown in Figures 6-9 and as indicated in figures 1-5, there is provided a package 2 comprising: a bottom panel 10, an inner front wall panel 21 and a rear wall panel 22, the inner front wall panel 21 and the rear wall panel 22 being foldably connected to a respective one of two opposing longitudinally extending sides of the bottom panel 10. The package 2 further comprises a first and a second inner side wall panel 31 , 32, each inner side wall panel 31 , 32 being foldably connected to a respective one of two opposing transversely extending sides of the bottom panel 10. The package 2 preferably comprises a lid panel 80 being foldably connected to the rear wall panel 22 along a longitudinally extending side opposite to the longitudinally extending side of the rear wall panel 22 being connected to the bottom panel 10. The package 2 further comprises an outer front wall panel 41 foldably connected to the inner front wall panel 21 along a longitudinally extending side opposite to the longitudinally extending side of the inner front wall panel 21 being connected to the bottom panel 10. The package 2 preferably also comprises a first and a second outer side wall panel 61 , 62 foldably connected to the first respectively to the second inner side wall panel 31 , 32 along a transversely extending side opposite to the transversely extending side of the respective inner side wall panel 31 , 32 being connected to the bottom panel 1. The outer front wall panel 41 is adhesively connected to the inner front wall panel 21 and form a double-walled front wall of the package. The first and the second outer side wall panel 61 , 62 are adhesively connected to the respective inner side wall panel 31 , 32 and form double- walled side walls of the package.

Even though it is preferred that the blank and package are designed in accordance with the disclosure in the detailed disclosure of preferred embodiments and the appended drawings, it should be noted that a specific preferred embodiment of a specific component does not necessarily have to be combined with a specific embodiment of another component. Thus, advantages associated with a specific embodiment, including one or more features, of a specific component may be accomplished even though the other component s is/are designed in accordance with the more general disclosure under the summary of the invention rather than being defined in accordance with the specific embodiment disclosed in the detailed description. It is contemplated that there are numerous modifications of the embodiments described herein, which are still within the scope of the invention as defined by the appended claims. Additionally, the mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage.

As mentioned above, the outer front wall panel 41 may e.g. be shorter than the inner front wall panel 21 as seen in the transversal direction T and/or as seen in the longitudinal direction L, and/or the outer side wall panels 61 , 62 may e.g. be shorter than the inner side wall panels 31 , 32 as seen in the transversal direction T and/or as seen in the longitudinal direction L.

Claims

1. A blank configured to be erected into a package, the blank comprising: a bottom panel (10), an inner front wall panel (21) and a rear wall panel (22), the inner front wall panel (21 ) and the rear wall panel (22) being foldably connected to a respective one of two opposing longitudinally extending sides of the bottom panel (10), a first and a second inner side wall panel (31 , 32), each inner side wall panel (31 , 32) being foldably connected to a respective one of two opposing transversely extending sides of the bottom panel (10), a lid panel (80) being foldably connected to the rear wall panel (22) along a longitudinally extending side opposite to the longitudinally extending side of the rear wall panel (22) being connected to the bottom panel (10), an outer front wall panel (41 ) foldably connected to the inner front wall panel (21) along a longitudinally extending side opposite to the longitudinally extending side of the inner front wall panel (21 ) being connected to the bottom panel (10), a first and a second outer side wall panel (61 , 62) foldably connected to the first respectively to the second inner side wall panel (31 , 32) along a transversely extending side opposite to the transversely extending side of the respective inner side wall panel (31, 32) being connected to the bottom panel (10), wherein the outer front wall panel (41 ) is configured to be adhesively connected to the inner front wall panel (21) and form a double-walled front wall when the blank is erected into a package, and wherein the first and the second outer side wall panels (61 , 62) are configured to be adhesively connected to the respective inner side wall panel (31 , 32) and form double-walled side walls when the blank is erected into a package.

2. The blank according to claim 1 , wherein at each corner of the bottom panel (10), the respective inner side wall panel (31, 32) is interconnected with the inner front wall panel (21 ) respectively the rear wall panel (22) by a respective set of corner panels (91a, 91b), the corner panels (91a, 91b) of respective set of corner panels (91a, 91b) being foldable relative to the respective inner side wall panel (31 , 32), to the inner front wall panel (21 ) or the rear wall panel (22), and to each other about an internal fold line (FL91) into triangular flaps, as the blank is erected into the package.

3. The blank according to claim 2, wherein the triangular flaps are configured to be folded outwardly, and preferably outwardly into abutment with an outwardly facing surface of the inner side wall panel (31 , 32).

4. The blank according to any one of claims 1-3, wherein the blank further comprises: a locking tongue (81) being foldably connected to and extending outwardly from the lid panel (80) in a transverse direction (T), as seen in a flat-laid state of the blank, and a slit (42) formed in the double-walled front wall, wherein the locking tongue (81) is configured to be inserted into the slit (42) and thereby keep the lid panel (80) in a closed position of the package.

5. The blank according to claim 4, wherein the blank further comprises: a front top panel (50) between the inner and the outer front wall panels (21 , 41), the front top panel (50) being configured to form an upper surface of the double-walled front wall panel, wherein the slit (42) preferably is formed in the front top panel (50).

6. The blank according to any one of claims 1-5, wherein each outer side wall panel (61 , 62) comprises a transversely protruding portion (64), the transversely protruding portion (64) extending as seen in a transverse direction (T) past a geometrical extension of a folding line between the bottom panel (10) and the inner front wall panel (21), as seen in a flat-laid state of the blank.

7. The blank according to any one of claims 1-6, wherein the outer front wall panel (41) is configured to be adhesively connected to the inner front wall panel (21 ) at an adhesion portion (44) of the outer front wall panel 41 , the adhesion portion (44) forming part of an end portion of the outer front wall panel (41), as seen along the transverse direction (T), preferably such that the adhesion portion (44) of the outer front wall panel (41 ) is adhesively connected to a portion of the inner front wall panel (21 ) being configured to form a lower part of the double-walled front wall of the package (2).

8. The blank according to any one of claims 1 -7, wherein the outer side wall panels (61, 62) are configured to be adhesively connected to the respective inner side wall panel (31 , 32) at an adhesion portion (64) of the respective outer side wall panel (61, 62), the adhesion portion (64) forming part of an end portion of the respective outer side wall panel (61 , 62) as seen along a longitudinal direction L, preferably such that the adhesion portion (64) of the respective outer side wall panel (61 , 62) is adhesively connected to a portion of the respective inner side wall panel (31 , 32) being configured to form a lower part of the respective double-walled side wall of the package (2).

9. The blank according to any one of claims 1-8, wherein the blank further comprises: a side top panel (51 , 52) between the respective inner and the outer side wall panels (31 , 61 , 32, 62), the respective side top panel being configured to form an upper surface of the respective double-walled side wall.

10. The blank according to any one of claims 1 -9, wherein the blank (1 ) is formed of a paper-based material.

11. The blank according to any one of claims 1 -10, wherein the blank (1 ) is provided with a polymer-based layer on a first major surface (1a) of the blank, the first major surface (1a) being intended to form an inside of the package (2) when the blank (1) is erected into the package (2).

12. A package comprising: a bottom panel (10), an inner front wall panel (21 ) and a rear wall panel 22, the inner front wall panel (21 ) and the rear wall panel (22) being foldably connected to a respective one of two opposing longitudinally extending sides of the bottom panel (10), a first and a second inner side wall panel (31 , 32), each inner side wall panel (31 , 32) being foldably connected to a respective one of two opposing transversely extending sides of the bottom panel (10), a lid panel (80) being foldably connected to the rear wall panel (22) along a longitudinally extending side opposite to the longitudinally extending side of the rear wall panel (22) being connected to the bottom panel (10), an outer front wall panel (41 ) foldably connected to the inner front wall panel (21) along a longitudinally extending side opposite to the longitudinally extending side of the inner front wall panel (21 ) being connected to the bottom panel (10), a first and a second outer side wall panel (61 , 62) foldably connected to the first respectively to the second inner side wall panel (31 , 32) along a transversely extending side opposite to the transversely extending side of the respective inner side wall panel (31, 32) being connected to the bottom panel (10), wherein the outer front wall panel (41 ) is adhesively connected to the inner front wall panel (21) and form a double-walled front wall of the package (2), and wherein the first and the second outer side wall panels (61 , 62) are adhesively connected to the respective inner side wall panel (31, 32) and form double-walled side walls of the package (2).