Packaging blank for forming a package and package formed from the packaging blank

Abstract

A packaging blank (2, 2', 2'', 2''') is described for forming a package (40) filled with a product that is easy to pour. The packaging blank comprises at least a first transverse fold line (4) and a second transverse fold line (5), which extend transversely with respect to the longitudinal axis (A) of the packaging blank (2, 2', 2'', 2'''). The packaging blank (2, 2', 2'', 2''') is divided into an upper region (6) including an upper fold pattern (7), a lower region (8) including a lower fold pattern (9), and an intermediate region (10) included between the first transverse fold line (4) and the second transverse fold line (5). The first transverse fold line (4) delimits the upper fold pattern (7), and the second transverse fold line (5) delimits the lower fold pattern (9). The packaging blank (2, 2', 2'', 2''') further comprises a plurality of straight fold lines (19a, 19b, 19c) parallel to the longitudinal axis (A) and extending from the first transverse fold line (4) towards the second transverse fold line (5). Each straight fold line (19a, 19b, 19c) is parallel to the longitudinal axis (A) and extends only along a part of the intermediate region (10).

Description

Technical Field

[0001] The present invention relates to a packaging blank, particularly having a multilayer structure, for forming a package filled with a pourable product, particularly a pourable food product.

[0002] Advantageously, the present invention relates to a package filled with a pourable product, particularly a pourable food product, formed from a packaging blank.

Background Art

[0003] As is well known, many liquid or pourable food products, such as fruit juices, UHT (ultra-high temperature treated) milk, wine, tomato sauce, etc., are sold in packages made from sterilized packaging materials.

[0004] As a typical example, there is a parallelepiped package for pourable food products known as Tetra Brik Aseptic®, which is made by sealing and folding a laminated packaging blank. The packaging blank has a multilayer structure with, for example, a fiber-based layer of paper or cardboard and layers of heat-sealing plastic material, for example polyethylene, covering both sides thereof. In the case of an aseptic package for long-term storage products such as UHT milk, the packaging blank also includes a layer of oxygen barrier material, for example aluminum foil (oxygen barrier layer), which is laid on top of the layer of heat-sealing plastic material and covered with a further layer of heat-sealing plastic material to finally form the inner surface of the package that comes into contact with the food product.

[0005] This type of package is usually manufactured by a fully automatic packaging device, which forms a package from each packaging blank. These packaging blanks can be provided in the form of a single packaging blank or in the form of a web formed from a plurality of continuously arranged packaging blanks.

[0006] When a packaging device is designed to form packages from a web, the packaging device advances and sterilizes the web, then forms the web into a tube and fills it with a pourable product, and then forms the tube into individual sealed packages.

[0007] To facilitate the formation of the package and define the shape of the package, a plurality of crease lines are provided in the packaging blank.

[0008] For example, it is known to manufacture packages from respective packaging blanks that include at least partially rounded side walls intervening between a bottom wall and a top wall.

[0009] Known packaging blanks make it possible to well define packages with rounded side walls, but there is a desire in this field to further improve the packaging blanks. Summary of the Invention Problems to be Solved by the Invention

[0010] An object of the present invention is to provide an improved packaging blank for forming packages, particularly those having at least partially rounded side walls.

[0011] Another object of the present invention is to provide an improved package formed from the packaging blank.

[0012] According to the present invention, there is provided a packaging blank as claimed in claim 1.

[0013] Preferred non - limiting embodiments of the packaging blank are described in the respective dependent claims.

[0014] According to the present invention, there is provided a package as claimed in claim 17. Means for Solving the Problems

[0015] Four non-limiting embodiments of the present invention will be illustratively described with reference to the accompanying drawings.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0017] Reference numeral 1 generally indicates a packaging machine for manufacturing (sealed) packages 40 of pourable products, particularly pourable food products such as pasteurized milk, fruit juice, wine, tomato sauce, etc., from respective packaging blanks 2 (see FIGS. 2 to 5).

[0018] Preferably, the packaging blank 2 may have a multi-layer structure.

[0019] More specifically, each packaging blank 2 may comprise at least one layer of fibrous material, such as a layer of paper or cardboard, and at least two heat-sealable plastic material layers, such as polyethylene, interposed between the layers of fibrous material.

[0020] One of these two heat-sealable plastic material layers may define the inner surface of the package 40 obtained from the packaging blank 2 and ultimately comes into contact with the pourable product.

[0021] Preferably, each packaging blank 2 comprises a layer of gas and light barrier material, such as an aluminum foil or an ethylene vinyl alcohol (EVOH) film, and is arranged in particular between one of the heat-sealable plastic material layers and a layer of fibrous material. Preferably, although not necessarily, the packaging blank 2 may comprise a further layer of heat-sealable plastic material intervening between the layer of gas and light barrier material and the layer of fibrous material.

[0022] According to the example shown in FIG. 1, the packaging blank 2 is provided in the form of a web 3.

[0023] More particularly, the web 3 may be formed from a plurality of packaging blanks 2 arranged in series.

[0024] In other words, the packaging blanks 2 arranged in series define a plurality of repeating units of the web 3. In particular, each repeating unit (i.e., each packaging blank 2) forms a precursor of one package 40. In other words, the packaging machine 1 may be configured to produce packages 40 from the web 3, and each package 40 is produced from one respective packaging blank 2.

[0025] In particular, each packaging blank 2 may be provided with a desired pattern / decoration.

[0026] Each packaging blank 2 may be designed to form a package 40 comprising: - a first part, in particular a first wall; - a second part, having in particular a second wall, spaced from the first part along the longitudinal direction of the package 40; and - an intermediate part, having in particular side walls, (fixedly) connected to the first part, in particular the first wall, and extending from the first part.

[0027] More specifically, each first part and each second part may respectively define the bottom and the top of each package.

[0028] Furthermore, each intermediate part may be interposed between each first part and each second part.

[0029] In particular, when each package 40 is in its nominal position (i.e., when used in the way intended by the user), the user recognizes the first part as the lower part and the second part as the upper part.

[0030] Preferably, each second part is defined as the part of the package that can be operated to pour out the pourable product. For example, the second part may be operated to obtain an opening that serves as a pouring spout, or the second part may be provided with an operable opening device (e.g., a cap).

[0031] Preferably, each intermediate part may be defined to be gripped by the user.

[0032] More specifically, each first wall defines the support surface of each package, and this support surface may be designed to contact a support, such as a shelf, when exposed, for example, in a sales outlet during use, or when stored.

[0033] In particular, each first wall may define the bottom wall of each package 40 (i.e., when each package 40 is placed on a support, the first wall contacts the support).

[0034] More specifically, each side wall may be rounded or may have at least one rounded portion.

[0035] Furthermore, each side wall may be interposed between each first wall and each second wall.

[0036] In particular, when the package 40 is disposed on the support, the second wall may define an upper wall.

[0037] According to some possible embodiments, the first wall and the second wall may be parallel to each other. Alternatively, the first wall and the second wall may be inclined with respect to each other. In particular, the second wall may define an inclined upper part and may define a part of a gable upper part.

[0038] FIG. 2 shows a first embodiment of the packaging blank 2.

[0039] The packaging blank 2 includes at least a first transverse fold line 4 and a second transverse fold line 5 that extend transversely with respect to the longitudinal axis A of the packaging blank 2 and divide the packaging blank 2 into the following regions. - An upper region 6 including an upper fold pattern 7 and configured to form an upper part of each package 40, preferably an upper wall, more preferably an upper wall and an upper flap; - A bottom region 8 including a bottom fold pattern 9 and configured to form a bottom of each package 40, preferably a bottom wall, more preferably a bottom wall and a bottom flap; and - An intermediate region 10 interposed between the first transverse fold line 4 and the second transverse fold line 5 and also interposed between the upper region 6 and the lower region 8, and designed to form an intermediate part of the package, in particular a side wall.

[0040] More specifically, each first transverse fold line 4 may delimit each upper fold pattern 7 and may preferably be adjacent to each upper fold pattern 7, and each second transverse fold line 5 may delimit each bottom fold pattern 9 and may preferably be adjacent to each bottom fold pattern 9.

[0041] More specifically, each packaging blank 2 may extend along a longitudinal axis A and a transverse axis B perpendicular to the longitudinal axis A.

[0042] Furthermore, each packaging blank 2 has a (substantially) two-dimensional shape, i.e., the respective extensions along the longitudinal axis A and the transverse axis B of each packaging blank 2 are significantly larger than the thickness of the packaging blank 2.

[0043] Preferably, each packaging blank 2 may have a rectangular or square shape.

[0044] More specifically, each packaging blank 2 - a first longitudinal boundary edge 15 and a second longitudinal boundary edge 16 spaced apart from each other along a first direction D1 transverse, preferably perpendicular, to the longitudinal axis A; - a first transverse boundary edge 17 and a second transverse boundary edge 18 spaced apart from each other along a second direction D2 parallel to the longitudinal axis A and / or transverse, preferably perpendicular, to the first direction D1 and / or transverse, preferably perpendicular, to the transverse axis B; may include.

[0045] Furthermore, the first direction D1 may be parallel to the transverse axis B.

[0046] Furthermore, each first longitudinal boundary edge 15 and each second longitudinal boundary edge 16 may be connected to and interposed between each first transverse boundary edge 17 and each second transverse boundary edge 18.

[0047] Preferably, each first longitudinal boundary edge 15 and each second longitudinal boundary edge 16 may be arranged at an angle of approximately 90 degrees with respect to each first transverse boundary edge 17 and each second transverse boundary edge 18.

[0048] It should be noted that when each packaging blank 2 is arranged alone, i.e., separated from other packaging blanks 2, each first longitudinal boundary edge 15, each second longitudinal boundary edge 16, each first transverse boundary edge 17, and each second transverse boundary edge 18 may be actual edges.

[0049] When the packaging blank 2 is arranged in the form of a web 3, each first longitudinal boundary edge 15 and each second longitudinal boundary edge 16 are actual edges (shown in FIG. 2), and each first transverse boundary edge 17 and each second transverse boundary edge 18 may be virtual edges. In particular, each first transverse boundary edge 17 of one packaging blank 2 may be adjacent to or coincide with each second transverse boundary edge 18 of another packaging blank 2.

[0050] Alternatively, the first transverse boundary edge 17 and the second transverse boundary edge 18 may each be an actual edge, and the first longitudinal boundary edge 15 and the second longitudinal boundary edge 16 may each be a virtual edge. In particular, each first longitudinal boundary edge 15 of one packaging blank 2 may be adjacent to each second longitudinal boundary edge 16 of another packaging blank 2.

[0051] Furthermore, each longitudinal axis A may define the longitudinal axis of each package 40 formed from each packaging blank 2.

[0052] Advantageously, each packaging blank 2 further comprises a plurality of straight fold lines, in particular at least a first straight fold line 19a and a second straight fold line 19b, which extend from each first transverse fold line 4 towards, preferably not all the way to, each second transverse fold line 5.

[0053] Preferably, each straight fold line, in particular each at least first straight fold line 19a and each at least second straight fold line 19b, may extend only along a part of each intermediate region 10. That is, the straight fold line does not extend all the way to each second transverse fold line 5.

[0054] The applicant has discovered that the presence of straight fold lines, in particular at least a first straight fold line 19a and a second straight fold line 19b, facilitates the formation of a side wall having a rounded shape or a side wall having a rounded portion.

[0055] According to some preferred non - limiting embodiments, each first straight fold line 19a is adjacent to each first longitudinal boundary edge 15 and may preferably be parallel. Preferably, other straight fold lines that are parallel to the longitudinal axis A and / or extend from the first transverse fold line 4 towards the second transverse fold line 5 may not be interposed between each first straight fold line 19a and each first longitudinal boundary edge 15.

[0056] According to some preferred non - limiting embodiments, each second straight fold line 19b is adjacent to each second longitudinal boundary edge 16 and may preferably be parallel. Preferably, other straight fold lines that are parallel to the longitudinal axis A and / or extend from the first transverse fold line 4 towards the second transverse fold line 5 may not be interposed between each second straight fold line 19b and each second longitudinal boundary edge 16.

[0057] More specifically, each first straight fold line 19a and each second straight fold line 19b may be closer to each first transverse boundary edge 15 and each second transverse boundary edge 16, respectively, than to the center point 20 of each first transverse fold line 4.

[0058] In particular, each center point 20 is defined as a point that is equidistant from the first end 21 of each first transverse fold line 4 and the second end 22 opposite to each first end 21.

[0059] Referring particularly to FIG. 2, each packaging blank 2 may further have one or more additional straight fold lines 19c interposed between each first straight fold line 19a and each second straight fold line 19b. In particular, each additional straight fold line 19c defines a part of a plurality of straight fold lines of each packaging blank 2.

[0060] In particular, each straight fold line of each packaging blank 2, in particular each first straight fold line 19a, each second straight fold line 19b, and preferably each additional straight fold line 19c, may be designed to facilitate the formation of the rounded shape and / or rounded portions of the respective side walls of each package 40.

[0061] More specifically, each straight fold line of each packaging blank 2, in particular each first straight fold line 19a, each second straight fold line 19b, and each additional straight fold line 19c, may be arranged at equal intervals from each other, particularly with respect to the first direction D1.

[0062] According to some preferred non-limiting embodiments, each straight fold line of each packaging blank 2, in particular each first straight fold line 19a, each second straight fold line 19b, and preferably each additional straight fold line 19c, may be (substantially) parallel to the longitudinal axis A.

[0063] According to some preferred non-limiting embodiments, each straight fold line of each packaging blank 2, in particular each first straight fold line 19a, each second straight fold line 19b, and in particular each additional straight fold line 19c, may have an extension of up to 30%, preferably up to 20%, more preferably up to 17% of the respective distance d between each first transverse fold line 4 and each second transverse fold line 5.

[0064] According to some preferred non-limiting embodiments, each straight fold line of each packaging blank 2, particularly each first straight fold line 19a, each second straight fold line 19b, and particularly each additional straight fold line 19c, may each have an extension, and the extension may be in the range of 4% to 20%, preferably 6% to 18%, more preferably 8% to 16% of the respective distance d between each first transverse fold line 4 and each second transverse fold line 5. In particular, the respective distance d between each first transverse fold line 4 and each second transverse fold line 5 may be coaxial with each straight fold line, that is, the first straight fold line 19a or the second straight fold line 19b or the additional straight fold line 19, and may be defined with respect to a straight axis extending from each first transverse fold line 4 to each second transverse fold line 5.

[0065] According to some preferred non-limiting embodiments, each straight fold line of each packaging blank 2, particularly each first straight fold line 19a, each second straight fold line 19b, and particularly each additional straight fold line 19c, may have an extension (length) in the range of 5 mm to 25 mm, preferably 8 mm to 22 mm, more preferably 10 mm to 20 mm.

[0066] According to some preferred non-limiting embodiments, each straight fold line of each packaging blank 2, particularly each respective first straight fold line 19a, each respective second straight fold line 19b, and particularly each respective additional straight fold line 19c, may have the same extension (length) as the other straight fold lines of each packaging blank 2. In other words, each first straight fold line 19a may have the same extension (length) as each second straight fold line 19b, and particularly each respective additional straight fold line 19c.

[0067] According to some preferred non-limiting embodiments, each packaging blank 2 may further comprise a plurality of auxiliary straight fold lines 23 (4 in the specific example shown in the figures) that extend from each second lateral fold line 5 towards each first lateral fold line 4 but do not reach each first lateral fold line 4. In other words, each auxiliary straight fold line 23 may extend only along a part of each intermediate region 10.

[0068] Preferably, at least some, and in the specific example shown all, of the auxiliary straight fold lines 23 may face each respective one of the straight fold lines.

[0069] More specifically, at least one auxiliary straight fold line 23 and at least another auxiliary straight fold line 23 may face the corresponding first straight fold line 19a and the corresponding second straight fold line 19b, respectively.

[0070] Referring particularly to FIG. 2, each packaging blank 2 may comprise a plurality of pairs 24 of auxiliary straight fold lines 23.

[0071] Preferably, each auxiliary straight fold line 23 of each pair 24 may be arranged to define a V shape, preferably with the intersection on each respective second lateral fold line 5 or at least adjacent to and / or branching towards each respective first lateral fold line 4.

[0072] According to such an embodiment, the strength of each edge of each package 40 can be increased by the auxiliary straight fold lines 23.

[0073] According to some preferred non-limiting embodiments, each second lateral fold line 5 has a straight shape and is preferably perpendicular to the longitudinal axis A.

[0074] According to some preferred non-limiting embodiments, each first lateral fold line 4 may include a plurality of first straight portions 30 perpendicular to the respective longitudinal axis A and a plurality of second straight portions 31 lateral to the respective longitudinal axis A.

[0075] Preferably, each second straight portion 31 may be interposed between two respective first straight portions 30.

[0076] More specifically, each upper fold pattern 7 may include a plurality of additional fold lines 32, and preferably, some of them are parallel to the respective longitudinal axis A and some may be lateral to the respective longitudinal axis A.

[0077] Auxiliary upper lateral fold lines 33 may be provided, particularly in the lateral direction, and more specifically in the vertical direction.

[0078] More specifically, additional fold lines 32 may be interposed between each first lateral fold line 4 and each upper lateral fold line 33.

[0079] Preferably, each upper lateral fold line 33 may be adjacent to and parallel to each first lateral boundary edge 17.

[0080] More specifically, each bottom fold pattern 9 may include a plurality of additional fold lines 34, and preferably, some of them are parallel to the respective longitudinal axis A and some are lateral to the respective longitudinal axis A.

[0081] Auxiliary bottom lateral fold lines 35 may be provided, particularly in the lateral direction, and more specifically in the vertical direction.

[0082] More specifically, additional fold lines 34 may be interposed between the second lateral fold line 5 and the bottom lateral fold line 35.

[0083] Preferably, each bottom lateral fold line 35 may be adjacent to and parallel to a respective second lateral boundary edge 18 .

[0084] According to some preferred, non-limiting embodiments, each fold line of each packaging blank 2, such as first transverse fold line 4 and / or second transverse fold line 5 and / or first linear fold line 19a and / or second linear fold line 19b and / or additional linear fold line 19c and / or auxiliary linear fold line 23 and / or additional fold line 32 and / or upper transverse fold line 33 and / or additional fold line 34 and / or lower transverse fold line 35, may define a plurality of panels. More specifically, the panels may originate and / or correspond to various sections of the respective package 40.

[0085] More specifically, the panels may provide and / or correspond to an origin for a respective first portion, preferably a respective bottom portion, a respective middle portion, and a respective second portion, preferably a respective top portion.

[0086] More specifically, some of the panels may provide the origin and / or correspond to respective first portions, and / or some of the panels may provide the origin and / or correspond to second portions, and / or some of the panels may provide the origin and / or correspond to intermediate portions.

[0087] According to some preferred, non-limiting embodiments, each linear fold line of each packaging blank 2, i.e., each first linear fold line 19a and each second linear fold line 19b, and preferably each additional linear fold line 19c, may be arranged to correspond to a respective section defined by one or more respective panels, which section corresponds to a respective second portion, preferably a respective top, and more preferably a respective corner of a respective second wall.

[0088] According to some possible non-limiting embodiments, each auxiliary straight fold line 23 is arranged corresponding to each section defined by one or more of the panels, and each panel corresponds to each first part, preferably each bottom, and more preferably each corner of each first wall.

[0089] In particular, the upper fold pattern 7 defines the upper part of the package 40, preferably the panel forming the upper wall.

[0090] Similarly, the bottom fold pattern 9 defines the bottom of the package 40, preferably the panel forming the bottom wall.

[0091] In this case, each straight fold line of the packaging blank 2, namely the first straight fold line 19a and the second straight fold line 19b, and preferably the additional straight fold line 19c, may be arranged corresponding to the sections defined by one or more of the respective panels, and these panels more preferably correspond to each corner of the upper part of the second wall.

[0092] Similarly, each auxiliary straight fold line 23 of the packaging blank 2 may be arranged corresponding to the sections defined by one or more of the respective panels, and each panel corresponds to the bottom, and more preferably each corner of the first wall.

[0093] Referring to FIG. 3, the number 2' shows an alternative embodiment of the 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 their differences, and the same or corresponding reference numerals are used for the same or corresponding parts as much as possible.

[0094] In particular, the packaging blank 2' is different from the packaging blank 2 in that an additional straight fold line extending from each first lateral fold line 4 towards each second lateral fold line 5 is not interposed between each first straight fold line 19a and each second straight fold line 19b.

[0095] Referring to FIG. 4, numeral 2'' shows an alternative embodiment of the 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 their differences, and the same reference numerals as much as possible are used for the same or corresponding parts.

[0096] In particular, the packaging blank 2'' differs from the packaging blank 2 in that each auxiliary straight fold line 23 is parallel to its respective longitudinal axis A.

[0097] In particular, according to such an embodiment, it is possible to further improve the rounded shape of each package 40 and / or the formation of the rounded portion.

[0098] Alternatively or additionally, one auxiliary straight fold line 23 and another auxiliary straight fold line 23 may be coaxial with the first straight fold line 19a and the second straight fold line 19b, respectively.

[0099] Furthermore, only one auxiliary straight fold 23 may face the straight fold line.

[0100] Referring to FIG. 5, numeral 2''' shows an alternative embodiment of the 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 their differences, and the same reference numerals as much as possible are used for the same or corresponding parts.

[0101] In particular, the packaging blank 2''' differs from the packaging blank 2'' in that additional straight fold lines extending from each first lateral fold line 4 towards each second lateral fold line 5 are not interposed between each first straight fold line 19a and each second straight fold line 19b.

[0102] Referring particularly to FIG. 1, the packaging machine 1 can be configured to form respective packages 40 filled with pourable products from any one of the packaging blanks 2, packaging blanks 2', packaging blanks 2'', and packaging blanks 2''', preferably provided in the form of respective webs 3.

[0103] More specifically, the packaging machine 1 - a conveying device 41 configured to advance the web 3 along the web advancing path P at least to the tube forming station and form the web 3 into a tube 42 at the tube forming station; - a tube forming and sealing device 43 configured to form the tube 42 from the web 3 and seal the tube 42 longitudinally at the tube forming station; - a filling device 44 configured to fill the tube 42 with a pourable product; - a package forming unit 45 configured to shape, transversely seal, and cut the tube 42 to obtain the package 40. may be provided.

[0104] The advantages of the packaging blank 2 or packaging blank 2' or packaging blank 2'' or packaging blank 2''' according to the present invention will be apparent from the foregoing description.

[0105] In particular, by having straight fold lines, in particular at least a first straight fold line 19a and a second straight fold line 19b, it becomes easier to form the rounded shape and / or rounded portions of each package 40.

[0106] Obviously, modifications may be made to the packaging blank 2 or packaging blank 2' or packaging blank 2'' or packaging blank 2''' described herein without departing from the scope of protection defined in the appended claims.

Claims

1. A packaging blank (2, 2', 2'', 2''') for forming a package (40) filled with a pourable product, At least the first transverse fold line (4) and the second transverse fold line (5) extend laterally with respect to the longitudinal axis (A) of the packaging blank (2, 2', 2'', 2'''), and the packaging blank (2, 2', 2'', 2''') An upper region (6) including an upper fold pattern (7) and configured to form the upper part of the package (40), A bottom region (8) is configured to include a bottom fold pattern (9) and to form the bottom of the package (40), An intermediate region (10) interposed between the first transverse fold line (4) and the second transverse fold line (5), interposed between the bottom region (8) and the upper region (6), and designed to form the side wall of the package (40), Divided into, The first horizontal fold line (4) divides the upper fold pattern (7), The second horizontal fold line (5) divides the bottom fold pattern (9), The packaging blank (2, 2', 2'', 2'''') further comprises a plurality of straight fold lines (19a, 19b, 19c) extending from the first transverse fold line (4) toward the second transverse fold line (5), each of which is parallel to the longitudinal axis (A). Each of the aforementioned straight fold lines (19a, 19b, 19c) extends along only a portion of the intermediate region (10). Packaging blanks (2, 2', 2'', 2'''').

2. Each of the aforementioned straight fold lines (19a, 19b, 19c) has an extension that is up to 30% of the distance (d) between the first transverse fold line (4) and the second transverse fold line (5). The packaging blank according to claim 1.

3. A first longitudinal boundary edge (15) and a second longitudinal boundary edge (16) are spaced apart from each other along a first direction (D1) that crosses the longitudinal axis (A) of the packaging blank (2, 2', 2'', 2''''), A first lateral boundary edge (17) and a second lateral boundary edge (18) are spaced apart from each other along a second direction (D2) parallel to the longitudinal axis (A), Furthermore, At least the first straight fold line (19a) is adjacent to the first vertical boundary edge (15), and at least the second straight fold line (19b) is adjacent to the second vertical boundary edge (16), The packaging blank according to claim 1.

4. There are no other straight fold lines parallel to the longitudinal axis (A) and / or other straight fold lines extending from the first transverse fold line (4) toward the second transverse fold line (5), Between the first straight fold line (19a) and the first longitudinal boundary edge (15), there are no other straight fold lines parallel to the longitudinal axis (A) and / or extending from the first transverse fold line (4) toward the second transverse fold line (5), and between the second straight fold line (19b) and the second longitudinal boundary edge (16). The packaging blank according to claim 3.

5. The first straight fold line (19a) and the second straight fold line (19b) are located closer to the first lateral boundary edge (15) and the second lateral boundary edge (16), respectively, than to the center point (20) of the first lateral fold line (4). The packaging blank according to claim 3.

6. An additional straight fold line extending from the first horizontal fold line (4) toward the second horizontal fold line (5) is not interposed between the first straight fold line (19a) and the second straight fold line (19b). The packaging blank according to claim 3.

7. One or more additional straight fold lines (19c) are interposed between the first straight fold line (19a) and the second straight fold line (19b). The packaging blank according to claim 3.

8. At least the first transverse fold line (4) and the second transverse fold line (5) define the origin and / or corresponding panel of at least the upper, middle, and lower parts of each package (40), Each straight fold line (19a, 19b, 19c) is positioned to correspond to each section defined by one or more panels, the section corresponding to the top corner, The packaging blank according to claim 1.

9. The upper fold pattern (7) defines the panel that forms the upper part of the package (40), and the lower fold pattern (9) defines the panel that forms the lower part of the package (40). Each straight fold line (19a, 19b, 19c) is positioned to correspond to a section defined by one or more panels, the section corresponding to the top corner. The packaging blank according to claim 1.

10. Each straight fold line (19a, 19b, 19c) has an extension in the range of 5 mm to 25 mm. The packaging blank according to claim 1.

11. Each straight fold line (19a, 19b, 19c) has the same length as the other straight fold lines (19b, 19c, 19a). The packaging blank according to claim 1.

12. The present invention further comprises a plurality of auxiliary straight fold lines (23) extending from the second horizontal fold line (5) toward the first horizontal fold line (4), Each auxiliary straight fold line (23) extends along only a portion of the intermediate region (10). The packaging blank according to claim 1.

13. Each auxiliary straight fold line (23) is parallel to the longitudinal axis (A). The packaging blank according to claim 12.

14. The system comprises a plurality of pairs (24) of the aforementioned auxiliary straight fold lines (23), Each auxiliary straight fold line (23) of each pair (24) is positioned to define a V shape. The packaging blank according to claim 12.

15. At least the first transverse fold line (4) and the second transverse fold line (5) define the origin and / or corresponding panel of at least the top, middle and bottom of each package (40), Each auxiliary straight fold line (23) is positioned to correspond to a section defined by one or more panels, the section corresponding to a bottom corner. The packaging blank according to claim 12.

16. The upper fold pattern (7) defines the panel that forms the upper part of the package (40), and the lower fold pattern (9) defines the panel that forms the lower part of the package (40). Each auxiliary straight fold line (23) is positioned to correspond to a section defined by one or more panels, the section corresponding to the bottom corner, The packaging blank according to claim 12.

17. A package (40) filled with a pourable product formed from the packaging blanks (2, 2', 2'', 2'''') described in claim 1.

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