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Patent Searching and Data


Title:
PACKAGE BLANK, PACKAGE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/135152
Kind Code:
A1
Abstract:
The disclosure relates to a package blank (10) comprising a first set of panels (A1, A2, A3, A4, A5) including at least a first panel (A1) and a second panel (A2) being adjacent the first panel (A1) as seen in a first direction (X), and a corner strengthening flap (A6) being connected and foldable to the first panel (A1) along a first fold line (FLX16) having a main extension (FLX16) along the first direction (X), wherein the corner strengthening flap (A6) has, as projected (Α6') on a geometrical extension (FLX16') of the first fold line (FLX16), an extension (e) in the first direction (X) along at least a portion (e1) of the first panel (A1) and a distance (e2) past a fold line (FLY12) between the first panel (A1) and the second panel (A2). The disclosure also relates to a flat-laid package, to a method of providing a package and a package.

Inventors:
PETTERSSON INGVAR (SE)
Application Number:
PCT/IB2018/060683
Publication Date:
July 11, 2019
Filing Date:
December 28, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
STORA ENSO OYJ (FI)
International Classes:
B65D5/36; B65D5/02; B65D5/44
Foreign References:
JPS60163214U1985-10-30
JP2008127050A2008-06-05
US20080054055A12008-03-06
Other References:
None
Attorney, Agent or Firm:
MAGNUSSON, Ulf (SE)
Download PDF:
Claims:
CLAIMS

1. A package blank (10) comprising a first set of panels (A1 , A2, A3, A4, A5) including at least a first panel (A1 ), a second panel (A2) being adjacent the first panel (A1 ), one or more intermediate panels (A3, A4), and a last panel (A5), wherein the panels (A1 , A2, A3, A4, A5) of the first set of panels (A1 , A2, A3, A4, A5) are connected one after another along a first direction (X) and are foldable relative to each other about fold lines (FLY12, FLY23, FLY34, FLY45) being positioned between respective adjacent panels (A1 , A2, A3, A4, A5) of the first set of panels (A1 , A2, A3, A4, A5) and having main extensions transverse to the first direction (X),

wherein the first panel (1 ) is configured to be attached to the last panel (A5) and together with the last panel (A5) form a first major panel (1 ) of a package (20),

wherein the package blank (10) further comprises

a corner strengthening flap (A6), and

a second set of panels (A7, A9, A11 , A13) configured to form a top of the package (20), wherein the second set of panels includes a panel (A13) connected to the last panel (A5) and foldable relative to the last panel (A5) about a fold line having a main extension along the first direction (X),

characterized in

that the corner strengthening flap (A6) is connected and foldable to the first panel (A1 ) along a first fold line (FLX16) having a main extension along the first direction (X), and in

that the corner strengthening flap (A6) has, as projected (A6’) on a geometrical extension (FLX16’) of the first fold line (FLX16), an extension (e) in the first direction (X) along at least a portion (e1 ) of the first panel (A1 ) and a distance (e2) past a fold line (FLY12) between the first panel (A1 ) and the second panel (A2),

wherein the corner strengthening flap (A6) is configured to, as the blank is erected and folded into the package (20), be folded about the first fold line (FLX16) into an inside (C12i) of a corner (C12) formed by the first and second panels (A1 , A2) and to provide a strengthening of the corner (C12).

2. The package blank (10) according to claim 1 , wherein the corner strengthening flap (A6) is provided with a first internal fold line (FL1 ), which extends in parallel with the fold line (FLY12) between the first panel (A1 ) and the second panel (A2), and which divides the corner strengthening flap (A6) in a first portion (A61 ) and a second portion (A62), the first portion (A61 ) extending as seen along the first direction (X) alongside the first panel (A1 ) and the second portion (A62) extending as seen along the first direction (X) past the fold line (FLY12) between the first panel (A1 ) and the second panel (A2).

3. The package blank (10) according to claim 2, wherein the first internal fold line (FL1 ) is positioned at an offset (x1 ), as seen along the first direction (X), from the fold line (FLY12) between the first panel (A1 ) and the second panel (A2) towards the first panel (A1 ), wherein the package blank (10) is preferably cut through along said offset (x1 ).

4. The package blank (10) according to claim 2 or 3, wherein the first portion (A61 ) of the corner strengthening panel (A6) is provided with a second internal fold line (FL2) extending obliquely from a first point (P1 ) in a direction (FL2), the first point (P1 ) being positioned in the vicinity of an intersection between the first fold line (FLX16) and the fold line (FLY12) between the first and second panels (A1 , A2) and the direction (FL2) having a first component (FL2X) along the first direction (X) towards the first panel (A1 ) and a second component (FL2Y) along the first internal fold line (FL1 ).

5. The package blank (10) according to claim 4, wherein the first point (P1 ) is positioned at an offset (x2), as seen along the first direction (X), from the internal fold line (FL1 ), wherein the package blank (10) is preferably cut through along said offset (x2).

6. The package blank (10) according to any one of claims 1 -5, wherein the first fold line (FLX16) is, as seen in a second direction (Y) being transverse to the first direction (X), inwardly offset (y1 ) such that the second panel (A2) extends in the second direction (Y) past the first fold line (FLX16), wherein the package blank (10) is preferably cut through along said offset

(yi ).

7. The package blank (10) according to any one of claims 1 -6, wherein the package blank (10) is formed of paperboard, cardboard or corrugated cardboard.

8. The package blank (10) according to any one of claims 1 -7, wherein the first set of panels includes, in consecutive order along the first direction (X), the first panel (A1 ), the second panel (A2), a third panel (A3), a fourth panel (A4) and a fifth panel (A5) configured to form four major panels (1 , 2, 3, 4) of a package (20) with the first panel (A1 ) being provided at a one end of the blank (10) and the fifth panel (A5) being provided at the other end as seen along the first direction (X) and with the first panel (A1 ) being configured to be attached to the fifth panel (A5) and together with the fifth panel (A5) form a first (1 ) of the major panels (1 , 2, 3, 4) of the package (20).

9. The package blank (10) according to claim 8, wherein the third panel (A3) has a length (LA3) along the first direction (X) and the fifth panel (A5) has a length (LA5) along the first direction (X), wherein the length (LA3) of the third panel (A3) is shorter than, preferably between 25-75% of, the length (LA5) of the fifth panel (A5).

10. The package blank (10) according to claim 9, wherein the second panel (A2) or the fourth panel (A4), preferably the second panel (A2), is provided with an internal fold line (FLYA2; FLYA4) extending transversely to the first direction (X) and being positioned, as seen along the first direction (X) such that, as seen along the first direction (X),

a) the length (LA5) of the fifth panel (A5) plus a length (LA2’) of a portion of the second panel (A2) between the fold line (FLY12) between the first panel (A1 ) and the second panel (A2) and the internal fold line (FLYA2) of the second panel (A2) equals a length (L2a) between the internal fold line (FLYA2) of the second panel (A2) and a fold line (FLY45) between the fourth and fifth panels (A4, A5), or b) the length (LA5) of the fifth panel (A5) plus a length (LA4’) of a portion of the fourth panel (A4) between the fold line (FLY45) between the fourth and fifth panels (A4, A5) and the internal fold line (FLYA4) of the fourth panel (A4) equals a length (L2b) between the internal fold line (FLYA4) of the fourth panel (A4) and the fold line (FLY12) between the first and second panels (A1 , A2), whereby the package blank (10) is configured to be transported in a flat-laid state with the first panel (A1 ) being attached to the fifth panel (A5).

11. A flat-laid package (30) comprising a package blank (10) according to any one of claims 1 -11 , wherein the first panel (A1 ) is attached, preferably glued, to a surface (A5i) of the last panel (A5) being configured to face inwardly into an erected package.

12. Method of providing a package (20), the method comprising providing a package blank (10) according to any one of claims 1 -10 or a flat laid package (30) according to claim 11 ,

erecting the package blank (10) or the flat-laid package (30) such that the first and second panels (A1 , A2) forms a corner (C12),

folding the corner strengthening panel (A6) about the first fold line (FLX16) into the inside (C12i) of the corner (C12) formed by the first and second panels (A1 , A2) and to provide a strengthening of the corner (C12).

13. A package (20) comprising a first set of panels (A1 , A2, A3, A4, A5) including at least a first panel (A1 ) and a second panel (A2) being adjacent the first panel (A1 ), one or more intermediate panels (A3, A4), and a last panel (A5), wherein the panels (A1 , A2, A3, A4, A5) of the first set of panels (A1 , A2, A3, A4, A5) are connected one after another along a first direction (X) and are folded relative to each other about fold lines (FLY12, FLY23, FLY34, FLY45) being positioned between respective adjacent panels (A1 , A2, A3, A4, A5) of the first set of panels (A1 , A2, A3, A4, A5) and having main extensions transverse to the first direction (X), wherein the first and second panels (A1 , A2) form a corner (C12) of the package,

wherein the first panel (A1 ) is configured to be attached to the last panel (A5) and together with the last panel (A5) form a first major panel (1 ) of a package (20),

wherein the package (20) further comprises

a corner strengthening flap (A6), and

a second set of panels (A7, A9, A11 , A13) configured to form a top of the package (20), wherein the second set of panels includes a panel (A13) connected to the last panel (A5) and foldable relative to the last panel (A5) about a fold line having a main extension along the first direction (X),

characterized in that the corner strengthening flap (A6) is connected and foldable to the first panel (A1 ) along a first fold line (FLX16) having a main extension along the first direction (X), and in

that the corner strengthening flap (A6) has, as projected (A6’) on a geometrical extension (FLX16’) of the first fold line (FLX16), an extension (e) in the first direction (X) along at least a portion (e1 ) of the first panel (A1 ) and a distance (e2) past a fold line (FLY12) between the first panel (A1 ) and the second panel (A2),

wherein the corner strengthening flap (A6) is configured to be folded about the first fold line (FLX16) into an inside (C12i) of the corner (C12) and to provide a strengthening of the corner (C12).

14. The package (20) according to claim 13, wherein the corner strengthening flap (A6) is provided with a first internal fold line (FL1 ), which extends in parallel with the fold line (FLY12) between the first panel (A1 ) and the second panel (A2), and which divides the corner strengthening flap (A6) in a first portion (A61 ) and a second portion (A62), the first portion (A61 ) extending as seen along the first direction (X) alongside the first panel (A1 ) and the second portion (A62) extending as seen along the first direction (X) past the fold line (FLY12) between the first panel (A1 ) and the second panel (A2), wherein the first portion (A61 ) is configured to extend along, and preferably abut, an inside surface (A1 i) the first panel (A1 ) and the second portion (A62) is configured to extend along, and preferably abut, an inside surface (A2i) the second panel (A2).

Description:
PACKAGE BLANK. PACKAGE AND METHOD

Field of invention

The invention relates to a package blank. The invention also relates to a flat-laid package. The invention also relates to a method of providing a package. The invention also relates to a package.

Technical Background

Packages formed of paperboard, cardboard or corrugated cardboard are used for protecting and facilitating transportation for a wide variety of goods. The packages are typically produced by cutting out a blank from a flat sheet and typically also simultaneously or in direct connection therewith providing the blank with fold lines. Thereafter, the blank may be pre-glued and pre-folded into a flat-laid package before it is transported to the site where it is to be erected and filled with goods. Alternatively, the blank as such is transported to the site where it is to be erected and filled with goods.

It is often desirous to provide packages in a single piece and in a flat- laid, ready-to-erect state. It is often also desirous to provide additional strength to various portions of the package. Such additional strength is typically accomplished by providing a separate additional piece of

paperboard, cardboard or corrugated cardboard.

Summary of invention

It is an object of the invention to provide a design which may be used to provide additional strength to a package and still making it possible to provide a single piece package blank and preferably also making it possible to provide a package in a single piece, flat-laid, and ready-to-erect state.

This object has been achieved by a package blank comprising a first set of panels including at least a first panel and a second panel being adjacent the first panel, one or more intermediate panels, and a last panel wherein the panels of the first set of panels are connected one after another along a first direction and are foldable relative to each other about fold lines being positioned between respective adjacent panels of the first set of panels and having main extensions transverse to the first direction,

wherein the first panel is configured to be attached to the last panel and together with the last panel form a first major panel of a package, wherein the package blank further comprises

a corner strengthening flap, and

a second set of panels configured to form a top of the package, wherein the second set of panels includes a panel connected to the last panel and foldable relative to the last panel about a fold line having a main extension along the first direction,

characterized in

that the corner strengthening flap being connected and foldable to the first panel along a first fold line having a main extension along the first direction, and in

that the corner strengthening flap has, as projected on a geometrical extension of the first fold line, an extension in the first direction along at least a portion of the first panel and a distance past a fold line between the first panel and the second panel,

wherein the corner strengthening flap is configured to, as the blank is erected and folded into the package, be folded about the first fold line into an inside of a corner formed by the first and second panels and to provide a strengthening of the corner.

By providing a corner strengthening flap of this kind, it is possible to provide a single-piece package blank and still provide a strengthening of a corner of the package. To strengthen a corner is often important to the functionality of a package. One application where such a strengthening is considered especially useful is when elongate goods is positioned in diagonal positions in the package to be able to fit into the package. One such example is when a blade of a chain saw is positioned diagonally, e.g. along a major surface into a corner of the package. When the package is transported the chain saw blade may have a tendency to move against the inside of the corner and thereby wear the package material and ultimately risk damaging the container to an extent such that the blade is exposed. This problem is addressed by the package blank as specified above. The corner

strengthening flap will be folded into the corner and provided an additional layer of material at the corner.

It may be noted that the portion of the corner strengthening panel extending a distance past the fold line between the first and second panels is not connected to the second panel. This part of the corner strengthening panel is e.g. provided by cutting the package blank such that the corner strengthening panel is only connected to the first panel but occupies an area overlapping the second panel as seen along the first direction but being outside the second panel as seen along a second direction being transverse to the first direction.

It may be noted that the geometrical extension of the first fold line includes the distance along which the first fold line actually extends.

It may be noted that a fold line may be any kind of treatment performed such that the material has a tendency to be folded along the fold lines. A fold line may e.g. be provided by providing a partial cut. The partial cut may e.g. be a cut partially through the thickness of the material continuously or intermittently along the fold line. The partial cut may alternatively be through- cuts intermittently provided along the fold line. The fold line may alternatively be a local compression along the fold line. The fold lines may also be provided by actually pre-folding the package blank along the intended fold lines. Other kinds of fold lines are also conceivable by a person skilled in the art. The actual choice of method of providing the fold lines is also dependent upon the choice of material. However, such design considerations are well- known to a person skilled in the art and it will therefore not be elaborated in any further detail.

The first set of panels may alternatively be said to include, in

consecutive order along the first direction, the first panel, the second panel, and at least two more panels (intermediate panels) configured to form at least three major panels of a package with the first panel being provided at a one end of the blank as seen along the first direction and being configured to be attached to a panel (last panel) provided at the other end and together with that panel form a first of the major panels of the package. Such a design may be used basically to provide any kind of package having a polygonal cross- section.

It may be noted that the first panel is attached, preferably glued, to a surface of the last panel being configured to face inwardly into an erected package.

Preferred embodiments appear in the dependent claims and in the description.

The corner strengthening flap may be provided with a first internal fold line, which extends in parallel with the fold line between the first panel and the second panel, and which divides the corner strengthening flap in a first portion and a second portion, the first portion extending as seen along the first direction alongside the first panel and the second portion extending as seen along the first direction past the fold line between the first panel and the second panel. This will facilitate the folding of the corner strengthening panel into the inside of the corner formed by the first and second panels as the second portion may actively be folded to trail the first portion when the corner strengthening panel is folded into the corner.

The first internal fold line is positioned at an offset, as seen along the first direction, from the fold line between the first panel and the second panel towards the first panel. The offset is preferably chosen to be about equal to the material thickness of the material from which the package blank is formed. This will allow the second portion to be folded along the internal fold line and thereby be essentially flush with an inside surface of the second panel.

Thereby, the second portion will abut the inside surface of the second panel but it will not cause any unintentional tension or create any difficulty when the corner strengthening flap is folded into the corner. The package blank is preferably cut through along said offset.

The first portion of the corner strengthening panel may be provided with a second internal fold line extending obliquely from a first point in a direction, the first point being positioned in the vicinity of an intersection between the first fold line and the fold line between the first and second panels and the direction having a first component along the first direction towards the first panel and a second component along the first internal fold line. This additional second internal fold line facilitates folding of the corner strengthening panel into the corner since the material along the first internal fold line may be tucked away backwardly towards the first panel instead of sliding against the inside of the second panel. Moreover, this second fold line makes it possible to provide a corner strengthening panel configured to be folded into a corner having an inside angle being smaller than 90 degrees.

The first point may be positioned at an offset, as seen along the first direction, from the internal fold line. This facilitates folding of the second portion and the outer portion of the first portion about the second internal fold line. The offset is preferably chosen to be about equal to the material thickness of the material from which the package blank is formed such that folding about the internal fold lines does not create any interference. The package blank is preferably cut through along said offset. This facilitates internal folding of the first portion.

The first fold line may, as seen in a second direction being transverse to the first direction, be inwardly offset such that the second panel extends in the second direction past the first fold line. This allows for the corner strengthening panel to be fit inside the package without interfering with additional panels, such a secondary panel being connected to the second panel and being foldable about a fold line extending along the first direction.

The package blank is preferably cut through along said offset. Thereby will the folding of the corner strengthening panel be facilitated.

The package blank may be formed of paperboard, cardboard or corrugated cardboard.

The first set of panels may include, in consecutive order along the first direction, the first panel, the second panel, a third panel, a fourth panel and a fifth panel configured to form four major panels of a package with the first panel being provided at a one end of the blank and the fifth panel being provided at the other end as seen along the first direction and with the first panel being configured to be attached to the fifth panel and together with the fifth panel form a first of the major panels of the package. Such a design is suitable to provide a package having a cross-section formed of four panels. The cross-section may be rectilinear, such as quadratic or rectangular. The cross-section may alternatively be trapezoid.

In accordance with one embodiment, the third panel has a length along the first direction and the fifth panel has a length along the first direction, wherein the length of the third panel is shorter than, preferably between 25- 75% of, the length of the fifth panel. Such a design is suitable to provide a package having a trapezoid cross-section.

The second panel or the fourth panel, preferably the second panel, may be provided with an internal fold line extending transversely to the first direction and being positioned, as seen along the first direction such that, as seen along the first direction,

a) the length of the fifth panel plus a length of a portion of the second panel between the fold line between the first panel and the second panel and the internal fold line of the second panel equals a length between the internal fold line of the second panel and a fold line between the fourth and fifth panels, or

b) the length of the fifth panel plus a length of a portion of the fourth panel between the fold line between the fourth and fifth panels and the internal fold line of the fourth panel equals a length between the internal fold line of the fourth panel and the fold line between the first and second panels, whereby the package blank is configured to be transported in a flat-laid state with the first panel being attached to the fifth panel.

The above object has also been achieved by a flat-laid package comprising a package blank as disclosed above or as disclosed in more details in the following, wherein the first panel is attached, preferably glued, to a surface of the last panel being configured to face inwardly into an erected package. The last panel is the fifth panel in case the first subset of panels is formed of a first, second, third, fourth and a fifth panel.

The above object has also been achieved by a method of providing a package, the method comprising

providing a package blank as disclosed above or as disclosed in more details in the following or a flat laid package as disclosed above or as disclosed in more details in the following,

erecting the package blank or the flat-laid package such that the first and second panels forms a corner, and

folding the corner strengthening panel about the first fold line into the inside of the corner formed by the first and second panels and to provide a strengthening of the corner.

The above object has also been achieved by a package comprising a first set of panels including at least a first panel and a second panel being adjacent the first panel, one or more intermediate panels, and a last panel, wherein the panels of the first set of panels are connected one after another along a first direction and are folded relative to each other about fold lines being positioned between respective adjacent panels of the first set of panels and having main extensions transverse to the first direction, wherein the first and second panels form a corner of the package,

wherein the first panel is configured to be attached to the last panel and together with the last panel form a first major panel of a package,

wherein the package further comprises

a corner strengthening flap, and

a second set of panels configured to form a top of the package, wherein the second set of panels includes a panel connected to the last panel and foldable relative to the last panel about a fold line having a main extension along the first direction,

characterized in that the corner strengthening flap is connected and foldable to the first panel along a first fold line having a main extension along the first direction, and in

that the corner strengthening flap has, as projected on a geometrical extension of the first fold line, an extension in the first direction along at least a portion of the first panel and a distance past a fold line between the first panel and the second panel,

wherein the corner strengthening flap is configured to be folded about the first fold line into an inside of the corner and to provide a strengthening of the corner. The advantages of combination of the features has been discussed above in respect of the package blank. Those advantages are equally applicable in respect of the package and reference is made to the above discussion.

As also discussed above, the corner strengthening flap may be provided with a first internal fold line, which extends in parallel with the fold line between the first panel and the second panel, and which divides the corner strengthening flap in a first portion and a second portion, the first portion extending as seen along the first direction alongside the first panel and the second portion extending as seen along the first direction past the fold line between the first panel and the second panel, wherein the first portion is configured to extend along, and preferably abut, an inside surface the first panel and the second portion is configured to extend along, and preferably abut, an inside surface the second panel.

The package blank may alternatively in short be said to comprise a first set of panels including at least a first panel and a second panel being adjacent the first panel as seen in a first direction, and a corner strengthening flap being connected and foldable to the first panel along a first fold line having a main extension along the first direction, wherein the corner strengthening flap has, as projected on a geometrical extension of the first fold line, an extension in the first direction along at least a portion of the first panel and a distance past a fold line between the first panel and the second panel.

Brief description of the drawings

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. Figure 1 discloses a package blank in accordance with a first embodiment.

Figure 2 is an enlargement of the upper left corner of the package blank in figure 1.

Figure 3 is an enlargement of the encircled part of figure 2.

Figure 4 is a perspective view of a package formed of the blank of figures 1-3, in which a corner strengthening panel is not yet folded into a corner of the package.

Figure 5 is a perspective view of the package of figure 4 as seen from the other side.

Figure 6 is a planar view of the package of figures 4 and 5 as seen from a side shown in figure 5.

Figure 7 is a view corresponding to figure 7, in which the corner strengthening panel has been folded into the corner of the package.

Figure 8 discloses a package blank in accordance with a second embodiment and indicates various other embodiments.

Figures 9a and 9b discloses, from two opposite directions, a flat-laid, pre-glued, ready-to-erect package formed of the blank of figures 1 -3.

Detailed description of preferred embodiments

With reference to figure 1 there is disclosed a package blank 10 comprising a first set of panels including a first panel A1 , a second panel A2, a third panel A3, a fourth panel A4, and a fifth panel A5 (sometimes referred to as the last panel A5). The panels A1 , A2, A3, A4, A5 of the first set of panels are connected one after another along a first direction X and are foldable relative to each other about fold lines FLY12, FLY23, FLY34, FLY45 being positioned between respective adjacent panels A1 , A2, A3, A4, A5.

The fold lines FLY12, FLY23, FLY34, FLY45 all having main extensions transverse to the first direction X. It may be noted that the fold lines FLY12, FLY23, FLY34, FLY45 need not be transverse to the first direction. They may e.g. be paired and obliquely arranged relative to the transverse direction to provide non-rectilinearly shaped packages. Flowever, it is preferred that the fold lines FLY12, FLY23, FLY34, FLY45 all extend along a second direction Y being transverse to the first direction X. The package blank 10 may be formed of paperboard, cardboard or corrugated cardboard. The blank 10 has preferably a uniform material thickness t (see figure 6). The package blank 10 further comprises a corner strengthening flap A6 being connected and foldable to the first panel A1 along a first fold line FLX16. The first fold line FLX16 has a main extension FLX16 along the first direction X. It may be noted that the first fold line FLX16 need not be parallel to the first direction X. The first fold line FLX16 may e.g. be oblique relative to the first direction. It may be noted that such oblique orientation of the first fold line FLX16 may also influence the orientation of internal fold lines FL1 , FL2 of the corner strengthening panel A6. The first internal fold line FL1 should e.g. preferably also be obliquely arranged at an angle corresponding the obliqueness of the first fold line FLX16 such that the internal fold line FL1 will be aligned with the inside corner C12i of the package 20. In the preferred embodiment, the first fold line FLX16 is parallel with the first direction X.

The corner strengthening flap A6 has, as projected A6’ on a

geometrical extension FLX16’ of the first fold line FLX16 (as shown in figure 2), an extension e in the first direction X along at least a portion e1 of the first panel A1 and a distance e2 past a fold line FLY12 between the first panel A1 and the second panel A2.

As shown in figures 4 and 7, the corner strengthening flap A6 is configured to, as the blank is erected and folded into a package 20, be folded about the first fold line FLX16 into an inside C12i of a corner C12 formed by the first and second panels A1 , A2 and to provide a strengthening of the corner C12.

One application where such a strengthening is considered especially useful is when elongate goods is positioned in diagonal positions in the package to be able to fit into the package. One such example is when a blade of a chain saw (not shown) is positioned diagonally, e.g. from an inside of a corner C23 along a major surface A2i into a corner C12i of the package 20. When the package is transported the chain saw blade may have a tendency to move against the inside of the corner and thereby wear the package material and ultimately risk damaging the container to an extent such that the blade is exposed. As shown in figure 7, the corner strengthening flap A6 will be folded into the corner C12i and will provide an additional layer of material at the inside C12i of the corner C12.

It may be noted that the portion A62 of the corner strengthening panel extending a distance e2 past the fold line FLY12 between the first and second panels A1 , A2 is not connected to the second panel A2. This part of the corner strengthening panel A6 is e.g. provided by cutting the package blank 10 such that the corner strengthening panel A6 is only connected to the first panel A1 but occupies an area overlapping the second panel A2 as seen along the first direction X but being outside the second panel A2 as seen along a second direction Y being transverse to the first direction X. This may e.g. be provided providing a cut extending from the intersection of the fold line FLY12 between the first and second panels A1 , A2 and the fold line FLX27 between the second panel A2 and the associated top panel A7, the latter fold line FLX27 extending along the first direction X, the cut extending from said intersection obliquely having one component along the first direction Y and one component along the second direction X such that the width e2 of the overlapping portion A62 increases as the distance from the fold line FLX27 increases.

It may be noted that a fold line may be any kind of treatment performed such that the material has a tendency to be folded along the fold lines. A fold line may e.g. be provided by providing a partial cut. The partial cut may e.g. be a cut partially through the thickness of the material continuously or intermittently along the fold line. The partial cut may alternatively be through- cuts intermittently provided along the fold line. The fold line may alternatively be a local compression along the fold line. The fold lines may also be provided by actually pre-folding the package blank along the intended fold lines. Other kinds of fold lines are also conceivable by a person skilled in the art. The actual choice of method of providing the fold lines is also dependent upon the choice of material. Flowever, such design considerations are well- known to a person skilled in the art and it will therefore not be elaborated in any further detail.

As shown in the figures, the corner strengthening flap A6 is provided with a first internal fold line FL1 , which extends in parallel with the fold line FLY12. The first internal fold line FL1 divides the corner strengthening flap A6 in a first portion A61 and a second portion A62. The first portion A61 extends as seen along the first direction X alongside the first panel (A1 ). The second portion A62 extends as seen along the first direction X past the fold line FLY12.

As is shown in figure 3, the first internal fold line FL1 is positioned at an offset x1 , as seen along the first direction X, from the fold line FLY12 towards the first panel A1. The offset is preferably chosen to be about equal to the material thickness t (see figure 6) of the material from which the package blank 10 is formed. This will allow the second portion A62 to be folded along the first internal fold line FL1 and thereby be essentially flush with an inside surface A2i of the second panel A2. Thereby will the second portion A62 abut the inside surface A2i of the second panel A2 but it will not cause any unintentional tension or create any difficulty when the corner strengthening flap A6 is folded into the corner C12i. As indicated in figure 3, the package blank 10 is cut through along said offset x1 as marked by the solid line with reference numeral x1.

With reference to figure 2, the first portion A61 of the corner

strengthening panel A6 is provided with a second internal fold line FL2 extending obliquely from a first point P1 in a direction FL2. The first point P1 is positioned in the vicinity of an intersection between the first fold line FLX16 and the fold line FLY12 between the first and second panels A1 , A2. In the vicinity is preferably at a distance being within two to three times the material thickness t. The direction FL2 has a first component FL2X along the first direction X towards the first panel A1 and a second component FL2Y along the first internal fold line FL1. The direction FL2 forms an angle a with the fold line FLY12 being between 5-45°. Preferably the angle a is between 10-30°. In the preferred embodiment the angle a is 19°. This additional second internal fold line FL2 facilitates folding of the corner strengthening panel A6 into the corner C12 since the material along the first internal fold line FL1 may be folded backwardly towards the first panel A1 instead of sliding against the inside A2i of the second panel A2. Moreover, this second fold line FL2 makes it possible to provide a corner strengthening panel A6 configured to be folded into a corner C12 having an inside angle b being smaller than 90 degrees as is e.g. the case in the package 20 shown in figures 4-7.

As shown in figure 3, the first point P1 is positioned at an offset x2, as seen along the first direction X, from the internal fold line FL1. This facilitates folding of the second portion A62 and the outer portion A6T (see figure 2) of the first portion A61 about the second internal fold line FL2. The offset x2 is preferably chosen to be about equal to the material thickness t of the material from which the package blank 10 is formed such that folding about the internal fold lines FL1 , FL2 does not create any interference. The package blank 10 is cut through along said offset x2 as indicated by the solid line x2 in figures 2 and 3. This facilitates internal folding of the first portion A61.

As shown in figure 3, the first fold line FLX16 is, as seen in a second direction Y being transverse to the first direction X, inwardly offset y1 such that the second panel A2 extends in the second direction Y past the first fold line FLX16. This allows for the corner strengthening panel A6 to be fit inside the package 10 without interfering with additional panels, such a secondary panel A7 being connected to the second panel A2 and being foldable about a fold line FLX27 extending along the first direction X. The package blank 10 is cut through along said offset y1 as indicated by the solid line y1. Thereby will the folding of the corner strengthening panel A6 be facilitated.

The secondary panel A7 is configured to form a top panel of the package 20. The package blank is also provided with further panels (top and bottom panels) A9-A14 connected to their respective panel A1 -A5 of the first set of panels along fold lines extending along the first direction X. A second set of panels including a seventh panel A7, a ninth panel A9, an eleventh panel A11 and a thirteenth panel A13 are configured to form a top of the package 20 as shown in figures 4-7. It may especially be noted that the seventh panel A7 is connected to and foldable relative to the second panel A2 along a fold line extending along the first direction X. The thirteenth panel A13 is connected to and foldable relative to the fifth panel A5 (also named last panel A5) along a fold line extending along the first direction X.

A third set of panels including an eight panel A8, a tenth panel A10, a twelfth panel A12 and a fourteenth panel A14 are configured to form a bottom of the package as shown in figures 4-7.

As shown in figure 1 , the first panel A1 , the second panel A2, a third panel A3, a fourth panel A4 and a fifth panel A5 are arranged in consecutive order along the first direction X and are configured to form four major panels 1 , 2, 3, 4 of the package 20. As shown in figure 1 , the first panel A1 is provided at a one end of the blank 10 and the fifth panel A5 is provided at the other end as seen along the first direction X. The first panel A1 is configured to be attached, preferably by being glued, to the fifth panel A5 and together with the fifth panel A5 form a first 1 major panels of the package 20. Such a design is suitable to provide a package having a cross-section formed of four panels. The cross-section may be rectilinear, such as quadratic or rectangular as seen from above along the second direction Y. The cross-section as seen from above along the second direction Y may alternatively be trapezoid as shown in figures 4-7. It may also be noted that the package may have a number of major panels greater than four, such as five or six major panels or even more major panels than that. It may also be noted that the package may have only three major panels. This may be expressed as that first set of panels includes at least a first panel A1 and a second panel A2 being adjacent the first panel A1 , one or more intermediate panels A3, A4, and a last panel A5. In case the package has three major panels, there is provided one intermediate panel. In case the package has four major panels, there is provided two intermediate panels A3, A4. The number of intermediate panels is one less than the number of major panels of the package.

As shown in figure 1 , the third panel A3 has a length LA3 along the first direction X and the fifth panel A5 has a length LA5 along the first direction X, wherein the length LA3 of the third panel A3 is shorter than, preferably between 25-75% of, the length LA5 of the fifth panel A5. Such a design is suitable to provide a package 20 having a trapezoid cross-section. In the preferred embodiment the length LA3 is about 40% of the length LA5.

As shown in figure 1 , the second panel A2 is provided with an internal fold line FLYA2 extending transversely to the first direction X. The internal fold line FLYA2 is positioned, as seen along the first direction X such that, as seen along the first direction X, the length LA5 of the fifth panel A5 plus a length LA2’ of a portion of the second panel A2 between the fold line FLY12 and the internal fold line FLYA2 equals a length L2a between the internal fold line FLYA2 and a fold line FLY45 between the fourth and fifth panels A4, A5.

From figure 1 it may also be noted that the distance LA5 plus the distance LA2’ should be equal to the sum of the distances LA2”, LA3, and LA4.

The package blank 10 is configured to be transported in a flat-laid state with the first panel A1 being attached to the fifth panel A5. This flat-laid state is shown in figures 9a and 9b. It may be noted that in practice will some of the outer contours shown in figure 9a be visible behind the outer contours in figure 9b (albeit mirrored about the fold line FLYA2). Likewise, will some of the outer contours of figure 9b in practice be visible behind the outer contours shown in figure 9a (albeit mirrored about the fold line FLYA2). However, those contour lines originating from the material layer underlying the top layer has for clarity reason been omitted.

Alternatively, as shown in figure 8, the fourth panel A4 is provided with an internal fold line FLYA4 extending transversely to the first direction X. The internal fold line FLYA4 is positioned, as seen along the first direction X such that, as seen along the first direction X, the length LA5 of the fifth panel A5 plus a length LA4’ of a portion of the fourth panel A4 between the fold line FLY45 between the fourth and fifth panels A4, A5 and the internal fold line FLYA4 equals a length L2b between the internal fold line FLYA4 and the fold line FLY12 between the first and second panels A1 , A2. Also this package blank is configured to be transported in a flat-laid state with the first panel A1 being attached to the fifth panel A5.

The flat-laid package 30 of figures 9a and 9b, comprises a package blank 10 as disclosed, wherein the first panel A1 is attached, preferably glued, to a surface A5i of the fifth panel A5 being configured to face inwardly into an erected package 20.

The package 20 of figure 7 is provided according to the following:

A package blank 10 as disclosed or a flat laid package 30 as disclosed is provided.

The package blank 10 or the flat-laid package 30 is erected such that the first and second panels A1 , A2 forms a corner C12.

The corner strengthening panel A6 is folded about the first fold line FLX16 into the inside C12i of the corner C12 formed by the first and second panels A1 , A2. The folding operation is performed by folding the second portion A62 about the first internal fold line FL1 in a backward direction, backward relative to the folding direction of the first portion A61 , as indicated by arrow A in figure 4. If the corner strengthening panel A6 is also provided with a second internal fold line FL2, the second portion A62 and the outer portion A6T is further folded in the same direction about the second internal fold line FL2 as indicated by arrow B in figure 4. This latter is especially useful if the inside angle b of the corner C12 is smaller than 90° as is the case in the package 20 disclosed in figures 4-7.

As shown in figure 5, the corner strengthening panel A6 will be positioned inside any panel A13 being connected to the fifth panel A5 and being foldable about a fold line FLX513. This is also shown in figure 6.

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.

A corner strengthening panel A6b may for instance be provided on both sides of the first panel A1 as indicated by dashed lines in figure 8. A corner strengthening profile A6 need not necessarily be a panel A1 positioned at an end of the blank as seen along the first direction X. It is conceivable to have a corner strengthening profile positioned at an intersection between to central, as seen along the first direction X, panels, such as a corner strengthening panel A6c indicated by dashed lines in figure 8 at the

intersection between panels A4 and A5. It may be noted that although the notion first and second panels is also used to refer to specific panels in the preferred embodiment, the notions first and second panels are merely labels and may be replaced by any other set of neighbouring panels of the first set of panels.