IT202300008994A1 - PACKAGING DRAFT FOR FORMING A PACKAGE AND PACKAGE MADE UP OF A PACKAGING DRAFT - Google Patents

Description

DESCRIPTION

of the patent for industrial invention entitled:

"PACKAGING DRAFT FOR FORMING A PACKAGE AND PACKAGE MADE FROM A PACKAGING DRAFT"

TECHNICAL FIELD

The present invention relates to a packaging blank, in particular having a multilayer structure, for forming a package filled with a pourable product, in particular a pourable food product.

Advantageously, the present invention also relates to a package filled with a pourable product, in particular a pourable food product, and which is formed from a packaging blank.

STATE OF THE ART

As is known, many liquid or pourable food products, such as fruit juice, UHT (ultra high temperature treated) milk, wine, tomato sauce, etc., are sold in packages made of sterilized packaging material.

A typical example is the parallelepiped-shaped package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark), which is produced by sealing and folding a laminated packaging blank. The packaging blank has a multilayer structure comprising a fibrous base layer, for example paper or cardboard, covered on both sides with layers of heat-sealable plastic material, for example polyethylene. In the case of aseptic packages for products with a long shelf life, such as UHT milk, the packaging blank also comprises a layer of oxygen barrier material (an oxygen barrier layer), for example aluminium foil, which is superimposed on a layer of heat-sealable plastic material, and is in turn covered with another layer of heat-sealable plastic material forming the inner face of the package which ultimately comes into contact with the food product.

Packages of this kind are normally produced on fully automatic packaging machines, which form the packages from respective packaging blanks. These packaging blanks can be supplied in the form of individual packaging blanks or in the form of a strip, which is formed from a plurality of packaging blanks arranged in succession.

Where the packaging apparatus is designed to form packages from a tape, the packaging apparatus advances and sterilizes the tape, which is then formed into a tube and filled with the pourable product before the tube is formed into individual sealed packages.

To facilitate forming and to define the shape of the packages, the packaging blanks are equipped with a plurality of scoring lines.

Typically, a packaging blank has a rectangular shape and is delimited by a first longitudinal delimiting edge, a second longitudinal delimiting edge, a first transverse delimiting edge and a second transverse delimiting edge.

A typical packaging blank also includes an upper crease pattern configured to form an upper portion of the package and a lower crease pattern configured to form a lower portion of the package. The upper crease pattern includes at least a first transverse crease line and a second transverse crease line and the lower crease pattern includes at least a third transverse crease line and a fourth transverse crease line.

It is known that packets are made having a bottom wall and a top wall spaced apart along a longitudinal axis of the packets. A variant provides for the top wall to be inclined with respect to the bottom wall; such packets are known as packets having an oblique top wall.

It is known that such packages are produced from packaging blanks having an appropriate top crease pattern. The top crease pattern comprises a first transverse crease line and a second transverse seal line and a plurality of auxiliary crease lines and inclined crease lines intersecting the first transverse crease line and the second transverse crease line.

Although packages formed from such packaging blanks provide excellent results, there is a desire in the industry to further improve packaging blanks.

DISCLOSURE OF THE INVENTION

It is therefore an object of the present invention to provide an improved packaging blank.

Another object of the present invention is to provide an improved package consisting of a packaging blank.

According to the present invention, a packaging blank as claimed in claim 1 is provided.

Preferred non-limiting embodiments of the packaging blank are claimed in the respective dependent claims.

According to the present invention, a package according to claim 15 is also provided.

BRIEF DESCRIPTION OF THE DRAWINGS

Two non-limiting embodiments of the present invention will be described by way of example with reference to the attached drawings, in which:

Figure 1 is a schematic view of a package filled with a pourable product, with parts removed for clarity;

Figure 2 is a plan view of a packaging blank according to a first embodiment of the present invention;

Figure 3 is an enlarged view of a detail of the packaging blank of Figure 2; and

Figure 4 is a plan view of a packaging blank according to a second embodiment of the present invention.

BEST WAYS TO MAKE THE INVENTION

The number 1 in figure 1 indicates a package consisting of a blank of packaging 2 (see figure 2).

Preferably, each package 1 is formed from a respective packaging blank 2 by means of an automatic packaging machine.

The automatic packaging machine is configured to form packages 1 from the respective packaging blanks 2 and to fill the packages 1 with a pourable product, especially a pourable food product such as pasteurized milk, fruit juice, wine, tomato sauce, etc.

Preferably, the packaging blanks 2 may have a multilayer structure.

In further detail, the multilayer packaging package 2 may comprise at least one layer of fibrous material, such as a layer of paper or cardboard, and at least two layers of heat-sealable plastic material, such as polyethylene, with the layer of fibrous material interposed between the two.

One of these two layers of heat-sealable plastic material can define an internal face of the respective package 1 formed by the respective packaging blank 2 and possibly in contact with the pourable product.

Preferably but not necessarily, each packaging blank 2 may also comprise a layer of gas and light barrier material, for example aluminium foil or ethylene vinyl alcohol (EVOH) film, which in particular is interposed between one of the layers of heat-sealable plastic material and the layer of fibrous material. Preferably but not necessarily, the packaging blank 2 may also comprise a further layer of heat-sealable plastic material interposed between the layer of gas and light barrier material and the layer of fibrous material.

According to some non-limiting preferred embodiments, the packaging blanks 2 may be provided in the form of a strip.

In more detail, the tape can be formed by a plurality of packaging blanks 2 arranged in succession.

In other words, the successively arranged packaging blanks 2 define a plurality of repeating units of the tape. In particular, each repeating unit (i.e., the respective packaging blank 2) forms the precursor of a respective packet 1.

Preferably, the packaging machine may be configured to produce packages 1 from the tape in such a way that each package 1 arises from a respective packaging blank 2.

In particular, each packaging blank 2 can include a desired motif/decoration.

Each packaging blank 2 may be designed to form a package 1 comprising:

a first portion of package 3, preferably having a first wall;

- a second portion of package 4, preferably having a second wall, displaced from the first portion of package 3 along a longitudinal axis A of package 1;

an intermediate package portion 5, preferably having and/or defining a side wall, which is (fixedly) connected to and extends from the first package portion 3, preferably the first wall, and from the second package portion 4, preferably the second wall.

More specifically, each first portion of package 3, preferably the first wall, and each second portion of package 4, preferably the second wall, may define respectively a lower portion, preferably a lower wall, and an upper portion, preferably an upper wall, of the respective package 1.

Additionally, each intermediate packet portion 5 may be interposed between the respective first packet portion 3 and the respective second packet portion 4.

Preferably, when each packet 1 is in its nominal position (i.e., when it is used by a user in an intended manner), the user recognizes the first portion of packet 3 as the lower portion and the second portion of packet 4 as the upper portion.

Preferably, each second packet portion 4 may be defined as the portion of the packet that can be manipulated to allow the pourable product to escape. For example, the second packet portion 4 may be manipulated to provide a pouring opening or the second packet portion 4 may comprise an opening device 6 (e.g., a cap), which may be manipulated.

Preferably, each intermediate portion 5 may be defined to be grasped by a user.

More specifically, each first portion of package 3, preferably the first wall, can define a support surface of the respective package 1, which can be designed to be placed in contact with a support, such as a shelf, when, in use, it is for example displayed inside a point of sale or when it is stored.

According to some preferred embodiments, each second portion of package 4, preferably the respective second wall, may be inclined with respect to one of the respective longitudinal axis A and/or the respective first portion of package 3, preferably the respective first wall. More preferably, each second portion of package 4, preferably the respective second wall, may define an oblique upper portion.

In more detail, each packaging blank 2 may comprise:

two longitudinal delimiting edges, preferably a first longitudinal delimiting edge 10 and a second longitudinal delimiting edge 11, spaced apart along a first transverse direction D1, preferably perpendicular, to a longitudinal axis B of the respective packaging blank 2; and

- two transverse delimiting edges, preferably a first transverse delimiting edge 12 and a second transverse delimiting edge 13, spaced apart along a second direction D2 parallel to the longitudinal axis B and/or transverse, preferably perpendicular, to the first direction D1 and/or transverse, preferably perpendicular, to a transverse axis C of the respective packaging blank 2.

Preferably, each transverse axis C may be perpendicular to the respective longitudinal axis B.

Preferably, each longitudinal axis B may intersect the respective transverse axis C within a central point of the respective packaging blank 2.

More specifically, each packaging blank 2 may extend within a plane formed by the longitudinal axis B and the transverse axis C.

Furthermore, each packaging blank 2 may have a (substantially) two-dimensional shape, i.e. the respective extensions of each packaging blank 2 along the longitudinal axis B and the transverse axis C may be (significantly) greater than a thickness of the packaging blank 2. In other words, the thickness of the packaging blank 2 may be negligible compared to the respective extensions along the longitudinal axis B and the transverse axis C.

Preferably, each packaging blank 2 may have a rectangular or square shape.

Additionally, the first direction D1 can be parallel to the transverse axis C.

Furthermore, each first longitudinal delimiting edge 10 and each second longitudinal delimiting edge 11 may be connected and interposed between the respective first transverse delimiting edge 12 and the respective second transverse delimiting edge 13.

Preferably, each first longitudinal delimiting edge 10 and each second longitudinal delimiting edge 11 may be arranged at an angle of approximately 90° to the respective first transverse delimiting edge 12 and the respective second transverse delimiting edge 13.

It should be noted that in the case where each packaging blank 2 is arranged individually, i.e. separated from the other packaging blanks 2, the respective first longitudinal delimiting edge 10, the respective second longitudinal delimiting edge 11, the respective first transverse delimiting edge 12 and the respective second transverse delimiting edges 13 may be real edges.

In the case of packaging blanks 2 which are arranged in the form of a strip 3, the respective first longitudinal delimiting edge 10 and the respective second longitudinal delimiting edge 11 may be real edges (as also shown in figure 2) and the respective first transverse delimiting edge 12 and the respective second transverse delimiting edge 13 may be imaginary edges. In particular, each first transverse delimiting edge 12 of a packaging blank 2 may be adjacent to, or coincide with, the respective second transverse delimiting edge 13 of another packaging blank 2.

Alternatively, the respective first transverse delimiting edge 12 and the respective second transverse delimiting edge 13 may be real edges and the respective first longitudinal delimiting edge 10 and the respective second longitudinal delimiting edge il may be imaginary edges. In particular, each first longitudinal delimiting edge 10 of a packaging blank 2 may be adjacent to, or coincide with, the respective second longitudinal delimiting edge il of another packaging blank 2.

Furthermore, each longitudinal axis B can define the respective longitudinal axis A of the respective package 1 formed by the respective packaging blank 2.

With particular reference to Figure 2, each packaging blank 2 may comprise an upper crease pattern 14 configured to form the respective second package portion 4, preferably the respective upper portion, of the respective package 1.

More specifically, the upper crease pattern 14 may be configured to form the respective second wall, preferably the respective second wall and flaps attached to the respective second wall.

Preferably, the packaging blank 2 may also comprise a lower crease pattern 15 configured to form the respective first package portion 3, preferably the respective lower portion, of the respective package 1.

More specifically, the lower crease pattern 15 may be configured to form the respective first wall, preferably the respective first wall and fins attached to the respective first wall.

More specifically, each upper crease pattern 14 may define a respective upper region and each lower crease pattern 15 may define a respective lower region of the respective packaging blank 2.

With particular reference to Figures 2 and 3, each upper crease pattern 14 comprises at least a first transverse crease line 16 and a second transverse crease line 17 extending transversely with respect to the longitudinal axis B of the respective packaging blank 2.

Preferably, each first cross-scoring line 16 and the respective second cross-scoring line 17 are displaced from each other along the second direction D2.

Preferably, each first transverse crease line 16 is interposed between the respective first transverse delimiting edge 12 and the second transverse crease line 17. In other words, each first transverse crease line 16 is closer to the respective first transverse delimiting edge 12 than to the respective second transverse crease line 17.

Furthermore, each second cross-scoring line 17 may be closer to the center point of the respective packaging blank 2 than the respective first cross-scoring line 16.

According to some non-limiting preferred embodiments, between the respective first transverse delimiting edge 12 and the respective first transverse crease line 16 no further transverse crease lines are interposed which are or have at least portions perpendicular to the respective longitudinal axis B.

With particular reference to figures 2 and 3, each second transverse creasing line 17 may comprise:

- at least two lateral portions 21 opposite each other and transverse, preferably perpendicular, to the longitudinal axis B;

- at least one central portion 22;

- at least two inclined portions 23 inclined with respect to the longitudinal axis B and each extending between a respective lateral portion 21 and a central portion 22.

Preferably, one side portion 21 may be arranged closer to the first longitudinal delimiting edge 10 than the other side portion 21 and the other side portion 21 may be arranged closer to the second longitudinal delimiting edge 11 than the single side portion 21.

Preferably, each lateral portion 21 may have a rectilinear shape and/or may be perpendicular to the longitudinal axis B.

According to some non-limiting preferred embodiments, the central portion 22 may have a rectilinear shape and/or may be perpendicular to the longitudinal axis B.

Alternatively, the central portion 22 may have a shape other than straight, for example, the central portion 22 may be curved or may have at least one curved portion.

According to some preferred embodiments, each inclined portion 23 may have a rectilinear shape.

According to the embodiment shown, each side portion 21 may intersect the respective inclined portion 23 (i.e., the side portion 21 and the respective inclined portion 23 come into contact with each other).

Alternatively, each lateral portion 21 may not intersect the respective inclined portion 23, i.e. the respective ends of each lateral portion 21 and the respective inclined portion 23 do not touch each other or, in other words, a respective free space is interposed between each lateral portion 21 and the respective inclined portion 23.

According to some non-limiting embodiments, each lateral portion 21 defines a respective imaginary endless line 24 comprising the respective lateral portion 21 and the respective inclined portion 23 defines an inclined imaginary endless line 25 comprising the respective inclined portion 23.

Furthermore, each imaginary endless line 24 and the respective imaginary inclined endless line 25 may intersect at a respective intersection point 26. In case each lateral portion 21 and the respective inclined portion 23 intersect each other, the respective intersection point 26 corresponds to the respective contact point.

With reference to Figures 2 and 3, the upper crease pattern 14 also comprises one or more main inclined crease lines 27, preferably two main inclined crease lines 27, more preferably exactly two main inclined crease lines 27, which are inclined with respect to the longitudinal axis B.

In addition, the upper crease pattern 14 may also comprise one or more auxiliary crease lines 28 that extend transversely to the main inclined crease lines 27 and/or parallel to the longitudinal axis B and/or parallel to the longitudinal delimiting edges, preferably the first longitudinal delimiting edge 10 and the second longitudinal delimiting edge 11. Preferably, each auxiliary crease line 28 may be interposed between a respective main inclined crease 27 and a respective longitudinal delimiting edge.

More preferably, at least one auxiliary scoring line 28 may be interposed between the respective main inclined scoring line 27 and the first longitudinal delimiting edge 10 and another auxiliary scoring line 28 may be interposed between the respective main inclined scoring line 27 and the second longitudinal delimiting edge 11.

Furthermore, each main inclined score line 27 may be interposed and/or may extend between the first transverse score line 16 and the second transverse score line 17 intersecting a respective intersection point 26.

Preferably, each main inclined score line 27 may extend from its respective intersection point 26 towards the first transverse score line 16.

Advantageously, each main inclined crease line 27 may also intersect the first transverse crease line 16 at a respective auxiliary intersection point 29.

In some preferred embodiments, each main inclined crease line 27 may extend from its respective intersection point 26 to its respective auxiliary intersection point 29.

Preferably, a respective first distance d of each intersection point 26 from the longitudinal axis B may be greater than a respective second distance d2 of the respective auxiliary intersection point 29 from the longitudinal axis B.

Preferably, each main inclined score line 27 may extend from an end adjacent to the first transverse score line 16 toward the second transverse score line 17 and away from the longitudinal axis B.

Advantageously, each auxiliary scoring line 28 may extend between the first transverse scoring line 16 and the second transverse scoring line 17 without intersecting the second transverse scoring line 17 and the respective imaginary endless line 24 and the respective intersection point 26 and/or the respective main inclined scoring line 27.

According to some possible embodiments, the upper crease pattern 14 may also comprise one or more auxiliary inclined crease lines 30, each extending between the first transverse crease line 16 and the second transverse crease line 17, being interposed between the longitudinal axis B and a respective main inclined fold line 27.

Preferably, each auxiliary inclined score line 30 may intersect a respective main inclined score line 27, most preferably at the respective auxiliary intersection point 29 and/or on the first transverse score line 16.

More preferably, each main inclined score line 27 and its respective auxiliary inclined score line 30 may collaboratively define a V-shape.

In accordance with some non-limiting preferred embodiments, each auxiliary inclined score line 30 may extend between the first transverse score line 16 and the second transverse score line 17 without intersecting the second transverse score line 17 and without intersecting an imaginary line defined by (and comprising) the central portion 22.

According to some non-limiting preferred embodiments, each auxiliary crease line 28 may be laterally offset from its respective intersection point 26 along the first direction D1, preferably towards the longitudinal axis B. In other words, each auxiliary crease line 28 may be misaligned with respect to its respective intersection point 26.

According to some non-limiting preferred embodiments, the first transverse crease line 16 may have a linear shape and/or may extend parallel to the first transverse delimiting edge 12.

With particular reference to figures 2 and 3, the upper crease 14 may also comprise additional linear crease lines 31 parallel to the longitudinal axis B and/or auxiliary crease lines 28 and/or longitudinal delimiting edges. Preferably, each additional linear crease line 31 may be interposed between the longitudinal axis B and a respective auxiliary crease line 28.

According to some non-limiting preferred embodiments, each inclined portion 23 may define together with the central portion 22 a respective intersection 32, preferably independently of whether the inclined portion 23 and the central portion 22 may or may not come into contact with each other. The respective intersection 32 may be defined by the respective imaginary inclined endless line 25 and by an imaginary extension of the central portion 22 or by a point of contact between the respective inclined portion 23 and the central portion 22.

Furthermore, each auxiliary inclined crease line 30 may extend from its respective auxiliary intersection point 29 towards, and preferably without intersecting, a respective intersection 32.

According to some preferred and non-limiting embodiments, each intersection point 26 defines a respective corner 33, preferably a rear corner, of the second portion of the package 4, preferably of the upper portion, of the package 1 to be formed starting from the packaging blank 2.

Furthermore, each intersection 32 may define a respective corner 34, preferably a front corner, of the second portion of the package 4, preferably of the upper portion, of the package 1 to be formed starting from the packaging blank 2.

Preferably, each corner 33 may be spaced even further from the first portion of package 3 than the corners 34 when considering a direction parallel to the longitudinal axis A.

With particular reference to Figure 2, the lower crease pattern 15 may be displaced from the upper crease pattern 14 along the second direction D2 and configured to form the first packet portion 3, preferably the lower portion, of the packet 1.

Preferably, the lower crease pattern 15 may comprise at least a third transverse crease line 40 and a fourth transverse crease line 41 that extend transversely with respect to the longitudinal axis B.

Preferably, the third transverse crease line 40 may be interposed between the second transverse delimiting edge 13 and the fourth transverse crease line 41.

Preferably, the fourth transverse creasing line 41 may be linear and/or continuous.

Furthermore, the lower crease pattern 15 may comprise a plurality of additional crease lines 42, preferably some that are parallel and/or some that are transverse to the longitudinal axis B. Preferably, additional crease lines 42 may be interposed between the respective third transverse crease line 40 and the respective fourth transverse crease line 41.

Preferably, one or more additional score lines 42 may intersect the fourth transverse score line 41 at a respective additional intersection point 43. More preferably, each additional intersection point 43 is aligned with a respective intersection point 26 or a respective intersection 32.

Furthermore, the upper crease pattern 14 and the lower crease pattern 15 may delimit an intermediate region 44 designed to form the intermediate packet portion 5, preferably the sidewall, of the packet 1.

The intermediate region 44 may comprise an intermediate crease pattern 45 that at least partially defines a shape of the intermediate packet portion 5, preferably the sidewall.

Preferably, the intermediate crease pattern 45 may comprise a plurality of crease lines 46, preferably aligned in a desired pattern, the desired pattern at least partially defining the shape of the intermediate packet portion 5.

Preferably, at least one crease line 46, more preferably at least two crease lines 46, may intersect a respective intersection point 26 or a respective intersection 32, and preferably also the respective additional intersection point 43.

More specifically, each crease line 46 may comprise a respective first inclined portion which is inclined with respect to the longitudinal axis B and intersects the respective intersection point 26 or the respective intersection 32, a respective second inclined portion being inclined with respect to the longitudinal axis B and intersecting the respective additional intersection point 43 and a linear portion parallel to the longitudinal axis B and being interposed between the respective first inclined portion and the respective second inclined portion.

More specifically, each packaging blank 2 may comprise a first face and a second face opposite to the first face. In particular, the second face may be configured to define an internal face of the package 1 to be formed, the internal face being configured to be in contact with the pourable product.

In some preferred embodiments, the main inclined crease lines 27 may protrude from the first face, or alternatively from the second face.

In the first case, the main inclined crease lines 27 can be obtained with a creasing device having a male tool that interacts with the second face and a female tool that interacts with the first face. In the second case, the main inclined crease lines 27 can be obtained with a creasing device having a male tool that interacts with the first face and a female tool that interacts with the second face.

Preferably, the first transverse crease line 4 and/or the second transverse crease line 5 and/or the auxiliary crease lines 28 and/or the lower crease pattern 15 may protrude from the first face, or alternatively from the second face.

In the first case, the first transverse crease line 4 and/or the second transverse crease line 5 and/or the auxiliary crease lines 28 and/or the lower crease pattern 15 can be obtained with a creasing device having a male tool that interacts with the second face and a female tool that interacts with the first face. In the second case, the first transverse crease line 4 and/or the second transverse crease line 5 and/or the auxiliary crease lines 28 and/or the lower crease pattern 15 can be obtained with a creasing device having a male tool that interacts with the first face and a female tool that interacts with the second face.

With reference to Figure 4, the numeral 2' indicates an alternative embodiment of a packaging blank according to the present invention; since the packaging blank 2' is similar to the packaging blank 2, the following description is limited to the differences between them, and using the same references, where possible, for identical or corresponding parts.

In particular, the packaging blank 2' differs from the packaging blank 2 in that the main inclined score lines 27 do not intersect the first transverse score line 16.

In addition, the auxiliary inclined crease lines 30 also do not intersect the first transverse crease line 16.

Furthermore, each packaging blank 2' may comprise additional linear scoring lines 47 parallel to the longitudinal axis B, intersecting the first transverse scoring line 16 and having a portion arranged between the first transverse scoring line 16 and the second transverse scoring line 17 and another portion arranged between the first transverse scoring line 16 and the first transverse delimiting edge 12.

The advantages of the packaging blank 2 according to the present invention will be clear from the preceding description.

In particular, the applicant observed that by having the main inclined crease lines 27 intersecting the respective intersection point 26 and by having the respective auxiliary crease line 28 not intersecting the respective intersection point 26, the formation of the packets 1 is facilitated, in particular it is possible to obtain improved corners 33.

Clearly, changes may be made to the packaging blank 2 and 2' as described herein, without departing from the scope of protection as defined by the appended claims.

Claims (15)

1.- Packaging blank (2; 2') to form a package (1) filled with a pourable product comprising: - two longitudinal delimiting edges (10; 11) spaced apart along a first direction (DI) transverse to a longitudinal axis (B) of the packaging blank (2; 2'); and two transverse delimiting edges (12; 13) spaced apart along a second direction (D2) parallel to the longitudinal axis (B); and - a top crease pattern (14) configured to form an upper portion of the package (1); wherein the upper creasing pattern (14) comprises at least a first transverse creasing line (16) and a second transverse creasing line (17) extending transversely to the longitudinal axis (B) of the packaging blank (2; 2'), the first transverse creasing line (16) being interposed between a respective transverse delimiting edge (10) and the second transverse creasing line (17); wherein the second transverse creasing line (17) comprises at least two lateral portions (21) opposite each other and transverse to the longitudinal axis (B), at least one central portion (22) and at least two inclined portions (23) inclined to the longitudinal axis (B) and each extending between a respective lateral portion (21) and the central portion (22); wherein the upper crease pattern (14) comprises one or more main inclined crease lines (27) which are inclined to the longitudinal axis (B) and one or more auxiliary crease lines (28) extending transversely to the main inclined crease line (27) and/or parallel to the longitudinal axis (B) and/or parallel to the longitudinal delimiting edges (10; 11) and which are interposed between a respective main inclined crease line (27) and a respective longitudinal delimiting edge (10; 11); wherein each lateral portion (21) defines a respective imaginary endless line (24) comprising the respective lateral portion (21) and the respective inclined portion (23) defines an imaginary inclined endless line (25) comprising the respective inclined portion (23) and intersecting the respective imaginary endless line (23) at an intersection point (26); where each main inclined score line (27) extends between the first transverse score line (16) and the second transverse score line (17) intersecting the respective intersection point (26); wherein each auxiliary score line (28) extends between the first transverse score line (16) and the second transverse score line (17) without intersecting the second transverse score line (17), the imaginary endless line (24), the respective intersection point (26) and the respective main inclined score line (27). 2.- Packaging blank according to claim 1, wherein each main inclined score line (27) also intersects the first transverse score line (16) at an auxiliary intersection point (29). 3.- Packaging blank according to claim 2, wherein each main inclined crease line (27) extends from the intersection point (26) to the auxiliary intersection point (29). 4.- Packaging blank according to claim 2 or 3, wherein a respective first distance (di) of each intersection point (26) from the longitudinal axis (B) is greater than a respective second distance (d2) of the respective auxiliary intersection point (29) from the longitudinal axis (B). 5.- Packaging blank according to any of the preceding claims, wherein each lateral portion (21) and/or each inclined portion (23) intersects the respective intersection point (26). 6.- Packaging blank according to any of the preceding claims, wherein the upper creasing pattern (14) also comprises one or more auxiliary inclined creasing lines (30), each extending between the first transverse creasing line (16) and the second transverse creasing line (17), which are interposed between the longitudinal axis (B) and a respective main inclined creasing line (27) and intersect the respective main inclined creasing line (27). 7.- Packaging blank according to claim 6, wherein each auxiliary inclined scoring line (30) intersects the respective main inclined scoring line (27) on the first transverse scoring line (16). 8.- Packaging blank according to claim 6 or 7, wherein each auxiliary inclined score line (30) extends between the first transverse score line (16) and the second transverse score line (17) without intersecting the second transverse score line (17) and an imaginary line defined by the central portion (22). 9.- A packaging blank according to any of the preceding claims, and further comprising a lower crease pattern (15) offset from the upper crease pattern (14) along the second direction (D2) and configured to form a lower portion of the package (1). 10.- Packaging blank according to claim 9, wherein the lower crease pattern (15) comprises at least a third transverse crease line (40) and a fourth transverse crease line (41) extending transversely to the longitudinal axis (B) of the packaging blank (2; 2'), the third transverse crease line (40) being interposed between a transverse delimiting edge (13) and the fourth transverse crease line (41). 11.- Packaging blank according to claim 9 or 10, wherein the upper crease pattern (14) and the lower crease pattern (15) delimit an intermediate zone (44) designed to form a side wall of the package (1); wherein the intermediate region (44) comprises an intermediate crease pattern (45) at least partially defining a shape of the sidewall; wherein the intermediate crease pattern (45) comprises a plurality of crease lines (46), at least one intersecting a respective intersection point (26). 12.- Packaging blank according to any of the preceding claims, wherein each intersection point (26) defines a corner (33) of an upper portion of the package (1) to be formed from the packaging blank (2, 2')? 13.- Packaging blank according to any of the preceding claims, wherein each auxiliary crease line (28) is laterally offset from the respective intersection point (26) along the first direction (DI). 14.- A packaging blank according to any of the preceding claims, and further comprising a first face and a second face opposite to the first face; wherein the second face is configured to define an inner face of the package (1) to be formed, the inner face being configured to be in contact with the pourable product; where each main inclined crease line (27) protrudes from the first face or the second face. 15.- Package (1) filled with a pourable product formed by a packaging blank (2; 2') according to any of the preceding claims.