Abstract
Provided is a package sleeve made of a composite material for the manufacture of a package. The package sleeve includes a sleeve surface with an inner partial area and two outer partial areas, a longitudinal seam connecting two edges of the composite material to form a circumferential package sleeve, and two secondary fold lines running through the sleeve surface. The package sleeve is folded along two secondary fold lines. Apart from the two secondary fold lines, the package sleeve does not contain any further continuous fold lines in the region of the inner partial area of the sleeve surface. Also provided are a package and a method for manufacturing a package.
Claims
1. A package sleeve made of a composite material for the manufacture of a package, comprising: a sleeve surface with an inner partial area and with two outer partial areas, a longitudinal seam which connects two edges of the composite material to form a circumferential package sleeve, and two secondary fold lines, which run through the sleeve surface, wherein the package sleeve is folded along two secondary fold lines. wherein apart from the two secondary fold lines, the package sleeve does not contain any further continuous fold lines in the region of the inner partial area of the sleeve surface, and wherein the composite material includes at least one layer of paper or paperboard which is covered on the edge of the longitudinal seam running within the package sleeve.
2. The package sleeve according to claim 1, wherein the package sleeve is folded flat along both secondary fold lines by an angle of in each case around 180.
3. The package sleeve according to claim 1, wherein the two secondary fold lines run parallel to one another.
4. The package sleeve according to claim 1, further comprising base surfaces and gable surfaces, which are arranged on opposite sides of the sleeve surface.
5. The package sleeve according to claim 4, wherein the base surfaces and the gable surfaces in each case comprise two rectangular surfaces and six triangular surfaces.
6. The package sleeve according to claim 5, wherein the secondary fold lines run through the point of contact of three adjacent triangular surfaces of the base surface and through the point of contact of three adjacent triangular surfaces of the gable surface.
7. The package sleeve according to claim 4, wherein the gable surface on the rear side of the package sleeve has a shorter length than the length of the gable surface on the front side of the package sleeve.
8. The package sleeve according to claim 1, wherein the secondary fold lines are stamped from the inner side to the outer side of the package sleeve and/or from the outer side to the inner side of the package sleeve.
9. The package sleeve according to claim 1, wherein the composite material of the package sleeve has a weight in the range between 150 g/m.sup.2 and 400 g/m.sup.2.
10. (canceled)
11. The package sleeve according to claim 1, wherein the layer of paper or paperboard is covered by a scaling strip and/or by turning over the composite material in the region of the longitudinal seam.
12. The package sleeve according to claim 1, wherein the composite material is stripped in the region of the longitudinal seam.
13. The package sleeve according to claim 1, further comprising a material weakening in one of the gable surface, for fixing a pouring element.
14. The package sleeve according to claim 1, wherein the package sleeve is open both in the region of the base surfaces and in the region of the gable surfaces.
15. A package made of a composite material, wherein the package is made from a package sleeve according claim 1, and wherein the package is sealed in the region of the base surfaces and in the region of the gable surfaces, wherein the package does not contain any continuous straight fold edges in the region of the inner partial area of the sleeve surface.
16. The package according to claim 15, wherein the partial areas of the sleeve surface adjoining the secondary fold lines are in each case arranged in an angular range between 160 and 200, in particular between 170 and 190 relative to one another.
17. The package according to claim 15, further comprising lugs which are laid against the base surfaces in the lower region of the package.
18. The package according to claim 15, further comprising lugs which are laid against the sleeve surface in the upper region of the package.
19. A method for manufacturing a package from a package sleeve made of a composite material, comprising: a) providing a package sleeve according to claim 1, and b) folding back the sleeve surface of the package sleeve along both secondary fold lines.
20. The method according to claim 19, wherein after being folded back, the partial areas of the sleeve surface adjoining the secondary fold lines once again lie in an angular range between 160 and 200 relative to one another.
Description
[0036] The invention is explained in more detail in the following with reference to a drawing which simply represents a preferred exemplary embodiment. In the drawing:
[0037] FIG. 1A: shows a sleeve blank intended for folding into a package sleeve known from the prior art,
[0038] FIG. 1B: shows a package sleeve known from the prior art, formed from the sleeve blank shown in FIG. 1A, in the flat folded state,
[0039] FIG. 1C: shows the package sleeve from FIG. 1B in the unfolded state,
[0040] FIG. 1D: shows the package sleeve from FIG. 1C with pre-folded base and gable surfaces,
[0041] FIG. 1E: shows a package, known from the prior art, which is formed from the sleeve blank shown in FIG. 1A, after welding,
[0042] FIG. 1F: shows the package from FIG. 1E with folded-in lugs,
[0043] FIG. 2A: shows a sleeve blank for manufacturing a first embodiment of a package sleeve according to the invention,
[0044] FIG. 2B: shows a first embodiment of a package sleeve according to the invention which is formed from the sleeve blank shown in FIG. 2A in a front view,
[0045] FIG. 2C: shows the package sleeve from FIG. 2B in a rear view,
[0046] FIG. 2D: shows the package sleeve from FIG. 2B and FIG. 2C in the unfolded state,
[0047] FIG. 2E: shows the package sleeve from FIG. 2D with pre-folded base and gable surfaces,
[0048] FIG. 2E: shows the package sleeve from FIG. 2D with pre-folded base and gable surfaces,
[0049] FIG. 2F: shows a first embodiment of a package according to the invention which is formed from the package sleeve shown in FIG. 2B after welding,
[0050] FIG. 2F: shows a first embodiment of a package according to the invention which is formed from the package sleeve shown in FIG. 2B after welding,
[0051] FIG. 2G: shows the package from FIG. 2F with folded-in lugs,
[0052] FIG. 2G: shows the package from FIG. 2F with folded-in fin seam,
[0053] FIG. 3A: shows a sleeve blank for manufacturing a second embodiment of a package sleeve according to the invention,
[0054] FIG. 3B: shows a second embodiment of a package sleeve according to the invention which is formed from the sleeve blank shown in FIG. 3A in a front view,
[0055] FIG. 3C: shows the package sleeve from FIG. 3B in a rear view,
[0056] FIG. 3D: shows the package sleeve from FIG. 3B and FIG. 3C in the unfolded state,
[0057] FIG. 3E: shows the package sleeve from FIG. 3D with pre-folded base and gable surfaces,
[0058] FIG. 3E: shows the package sleeve from FIG. 3D with pre-folded base and gable surfaces,
[0059] FIG. 3F: shows a second embodiment of a package according to the invention which is formed from the package sleeve shown in FIG. 3B after welding,
[0060] FIG. 3F: shows a second embodiment of a package according to the invention which is formed from the package sleeve shown in FIG. 3B after welding,
[0061] FIG. 3G: shows the package from FIG. 3F with folded-in lugs, and
[0062] FIG. 3G: shows the package from FIG. 3F with folded-in fin seam.
[0063] FIG. 1A shows a sleeve blank 1, known from the prior art, from which a package sleeve can be formed. The sleeve blank 1 can comprise several layers of different materials, for example paper, paperboard, plastic or metal, in particular aluminium. The sleeve blank 1 has several fold lines 2 which are intended to facilitate the folding of the sleeve blank 1 and which divide the sleeve blank 1 into several surfaces. The sleeve blank 1 can be divided into a first side surface 3, a second side surface 4, a front surface 5, a rear surface 6, a sealing surface 7, base surfaces 8 and gable surfaces 9. A package sleeve can be formed from the sleeve blank 1 in that the sleeve blank 1 is folded such that the sealing surface 7 can be connected, in particular welded, with the front surface 5.
[0064] FIG. 1B shows a package sleeve 10 known from the prior art in the flat folded state. The regions of the package sleeve already described in connection with FIG. 1A are provided with corresponding reference numbers in FIG. 1B. The package sleeve 10 is formed from the sleeve blank 1 shown in FIG. 1A. For this purpose, the sleeve blank 1 has been folded such that the sealing surface 7 and the front surface 5 are arranged so as to overlap, so that the two surfaces can be surface-welded together. As a result, a longitudinal seam 11 is created. FIG. 1B shows the package sleeve 10 in a flat folded-up state. In this state, a side surface 4 (concealed in FIG. 1B) lies beneath the front surface 5 while the other side surface 3 lies on the rear surface 6 (concealed in FIG. 1B). In the flat folded-up state, several package sleeves 10 can be stacked in a particularly space-saving manner. Therefore, the package sleeves 10 are frequently stacked at the place of manufacture and transported in stacked form to the location where filling takes place. Only there are the package sleeves 10 unstacked and unfolded so that they can be filled with contents, for example with foodstuffs. The filling can take place under aseptic conditions.
[0065] FIG. 1C shows the package sleeve 10 from FIG. 1B in the unfolded state. Here too, the regions of the package sleeve 10 already described in connection with FIG. 1A or FIG. 1B are provided with corresponding reference numbers. The unfolded state refers to a configuration in which an angle of around 90 is formed between the two in each case adjacent surfaces 3, 4, 5, 6, so that the package sleeve 10 assumes a square or rectangular cross section, depending of the shape of these surfaces. Accordingly, the opposite side surfaces 3, 4 are arranged parallel to one another. The same applies to the front surface 5 and the rear surface 6.
[0066] FIG. 1D shows the package sleeve 10 from FIG. 1C in the pre-folded state, i.e. in a state in which the fold lines 2 have been pre-folded both in the region of the base surfaces 8 as well as in the region of the gable surfaces 9. Those regions of the base surfaces 8 and the gable surfaces 9 which adjoin the front surface 5 and the rear surface 6 are also referred to as rectangular surfaces 12. The rectangular surfaces 12 are folded inwards during the pre-folding and later form the base or the gable of the package. Those regions of the base surfaces 8 and the gable surfaces 9 which adjoin the side surfaces 3, 4 are, in contrast, referred to as triangular surfaces 13. The triangular surfaces 13 are folded outwards during the pre-folding and form projecting regions of surplus material which are also referred to as lugs 14 and in a later manufacturing step are folded and fixed against the package, for example using an adhesive bonding process.
[0067] FIG. 1E shows a package 15 known from the prior art which is formed from the sleeve blank shown in FIG. 1A. The package 15 is shown after welding, i.e. in the filled and sealed state. After sealing, a fin seam 16 is created in the region of the base surfaces 8 and in the region of the gable surfaces 9. In FIG. 1E the lugs 14 and the fin seam 16 project. Both the lugs 14 and also the fin seam 16 are folded flat in a later manufacturing step, for example by means of a welding process, in particular one comprising activation and pressing.
[0068] FIG. 1F shows the package 15 from FIG. 1E with folded-in lugs 14. Moreover, the fin seams 16 are also folded flat against the package 15. The upper lugs 14 arranged in the region of the gable surface 9 are folded downwards and fixed flat against the two side surfaces 3, 4. Preferably, the upper lugs 14 are adhesively bonded or welded to the two side surfaces 3, 4. The lower lugs 14 arranged in the region of the base surface 8 are folded downwards, but are fixed flat against the underside of the package 15, which is formed by two rectangular surfaces 12 of the base surface 8. Preferably, the lower lugs 14 are also adhesively bonded or welded together with the package 15in particular with the rectangular surfaces 12.
[0069] FIG. 2A shows a sleeve blank 1 for manufacturing a first embodiment of a package sleeve according to the invention. The regions of the sleeve blank already described in connection with FIG. 1A to FIG. 1F are provided with corresponding reference numbers in FIG. 2A. The base surface 8 and the gable surface 9 are unchanged in the sleeve blank 1 in comparison with the sleeve blank 1 from FIG. 1A. However, one difference is that the two side surfaces 3, 4, of the front surface 5 and the rear surface 6 are combined to form a single sleeve surface 17. Apart from the sealing surface 7, the sleeve surface 17 extends over the entire width of the sleeve blank 1. A further difference is that the sleeve blank 1 contains two secondary fold lines 18 in the region of the sleeve surface 17. The two secondary fold lines 18 are straight and run parallel to one another. Moreover, the secondary fold lines 18 run through a point of contact SB of three adjacent triangular surfaces 13 of the base surface 8 and through a point of contact SG of three adjacent triangular surfaces 13 of the gable surfaces 9. The sleeve surface 17 is divided by the secondary fold lines 18 into an inner partial area 17A and two outer partial areas 17B. The inner partial area 17A lies between two secondary fold lines 18 and the outer partial areas 17B lie next to and outside of the two secondary fold lines 18.
[0070] The base surfaces 8 form four corner points E8 and the gable surfaces 9 form four corner points E9. The corner points E8, E9 represent corner points of the package which is to be produced from the sleeve blank 1. Each corner point E8 of a base surface 8 is associated with a corresponding corner point E9 of a gable surface 9, which is in each case the corner point E9 which, when the package is standing, is arranged above this corner point E8. A corner axis EA runs through two associated corner points E8, E9 which, in a conventional cuboid package, would correspond to a vertical package edge. Four corner axes EA are therefore present in the sleeve blank 1 shown in FIG. 2Aalso in the package sleeve produced from this and the package produced from this package sleeve (for reasons of clarity, only one corner axis EA is in each case drawn in). No fold lines are provided between the corner points E8 of the base surfaces 8 and the corner points E9 of the gable surfaces 9 associated therewithi.e. along the corner axes EA.
[0071] FIG. 2B shows a first embodiment of a package sleeve according to the invention 10, which is formed from the sleeve blank 1 shown in FIG. 2A, in a front view. The regions of the package sleeve already described in connection with FIG. 1A to FIG. 2A are provided with corresponding reference numbers in FIG. 2B. The package sleeve 10 has been created from the sleeve blank 1 through two steps: Firstly, the sleeve blank 1 is folded along the two secondary fold lines 18. The two partial areas 17A, 17B of the sleeve surface 17 are then connected with one another, in particular welded together, in the region of the sealing surface 7, creating a longitudinal seam 11 (concealed in FIG. 2B). The package sleeve 1 thus has a circumferential structure, closed in the circumferential direction, with an opening in the region of the base surface 8 and with an opening in the region of the gable surface 9. In the front view, the inner partial area 17A of the sleeve surface 17, which is limited on each side by the secondary fold lines 18, is visible. The other partial areas 17B of the sleeve surface 17 are on the rear side of the package sleeve 10 and are therefore hidden in FIG. 2B.
[0072] FIG. 2C shows the package sleeve 1 from FIG. 2B in a rear view. The regions of the package sleeve already described in connection with FIG. 1A to FIG. 2B are provided with corresponding reference numbers in FIG. 2C. In the rear view, the two outer partial areas 17B of the sleeve surface 17 which are connected with one another through the longitudinal seam 11 and which are limited on each side by the secondary fold lines 18 are visible. The inner partial area 17A of the sleeve surface 17 is on the front side of the package sleeve 10 and is therefore hidden in FIG. 2C.
[0073] FIG. 2D shows the package sleeve 1 from FIG. 2B and FIG. 2C in the unfolded state. The regions of the package sleeve already described in connection with FIG. 1A to FIG. 2C are provided with corresponding reference numbers in FIG. 2D. The unfolded state is achieved by folding back the package sleeve 1 along the secondary fold lines 18 running through the sleeve surface 17. The sleeve is folded back by around 180. The result of this folding back along the secondary fold lines 18 is that the two partial areas 17A, 17B of the sleeve surface 17 adjoining the secondary fold line 18 no longer lie on top of one another, but are arranged in the same plane. The package sleeve 10 is therefore only folded along the secondary fold lines 18 in its flat state (FIG. 2B, FIG. 2C); in the unfolded state (FIG. 2D), the package sleeve 10 (like the package which is to be formed out of it) is, in contrast, no longer folded along the secondary fold lines 18. Thus the designation as secondary fold lines 18.
[0074] FIG. 2E shows the package sleeve 10 from FIG. 2D with pre-folded base and gable surfaces. The regions of the package sleeve already described in connection with FIG. 1A to FIG. 2D are provided with corresponding reference numbers in FIG. 2E. The pre-folded state refers (as in FIG. 1D) to a state in which the fold lines 2 have been pre-folded, both in the region of the base surfaces 8 as well as in the region of the gable surfaces 9. The rectangular surfaces 12 are folded inwards during the pre-folding and later form the base or the gable of the package. The triangular surfaces 13 are folded outwards during the pre-folding and form projecting regions of surplus material which are also referred to as lugs 14 and in a later manufacturing step are folded and fixed against the package, for example using an adhesive bonding process.
[0075] FIG. 2E also shows the package sleeve 10 from FIG. 2D with pre-folded base and gable surfaces, for which reason corresponding reference numbers are also used here. The difference in comparison with FIG. 2E is that the triangular surfaces 13 are not folded outwards, but inwards.
[0076] FIG. 2F shows a first embodiment of a package according to the invention 15, which is formed from the package sleeve 10 shown in FIG. 2B, after welding. The regions of the package already described in connection with FIG. 1A to FIG. 2E are provided with corresponding reference numbers in FIG. 2E. The package 15 is shown after welding, i.e. in the filled and sealed state. After sealing, a fin seam 16 is created in the region of the base surfaces 8 and in the region of the gable surfaces 9. In FIG. 2F the lugs 14 and the fin seam 16 project. Both the lugs 14 and also the fin seam 16 are folded flat in a later manufacturing step, for example by means of an adhesive bonding process.
[0077] FIG. 2F also shows a first embodiment of a package according to the invention 15, which is formed from the package sleeve 10 shown in FIG. 2B, after welding. Corresponding reference numbers are therefore also used here. The difference in comparison with FIG. 2F is that the triangular surfaces 13 are not folded outwards prior to welding, but inwards. Therefore, the lugs 14 do not project outwards, but extend inwards. This leads to a shorter fin seam 16.
[0078] FIG. 2G shows the package 15 from FIG. 2F with folded-in lugs 14. The regions of the package already described in connection with FIG. 1A to FIG. 2F are provided with corresponding reference numbers in FIG. 2G. As well as the lugs 14, the fin seams 16 are also folded against the package 15. The upper lugs 14 arranged in the region of the gable surface 9 are folded downwards and laid flat against the sleeve surface 17. Preferably, the upper lugs 14 are adhesively bonded or welded to the sleeve surface 17. The lower lugs 14 arranged in the region of the base surface 8 are folded downwards, but are fixed flat against the underside of the package 15, which is formed by two rectangular surfaces 12 of the base surface 8. Preferably, the lower lugs 14 are also adhesively bonded or welded together with the package 15in particular with the rectangular surfaces 12. In the package 15 illustrated in FIG. 2G, while the sleeve surface 17 is curved, it does not contain any fold edges in the region of the sleeve surface 17.
[0079] FIG. 2G shows the package 15 from FIG. 2F with folded-in fin seam 16. Corresponding reference numbers are therefore also used here. The fin seam 16 is folded over and laid flat against the underside of the package 15, which is formed through two rectangular surfaces 12 of the base surface 8. Preferably, the fin seam 16 is adhesively bonded or welded with the package 15in particular with a rectangular surface 12. The difference in comparison with FIG. 2G lies in the structure of the base of the package 15: In FIG. 2G the lugs 14 are arranged beneath the rectangular surfaces 12 and are thus visible from the underside; in FIG. 2G, in contrast, the rectangular surfaces 12 are arranged beneath the lugs 14 and are thus visible from the underside.
[0080] FIG. 3A shows a sleeve blank 1 for manufacturing a second embodiment of a package sleeve according to the invention. The sleeve blank 1 in FIG. 3A largely corresponds to the sleeve blank 1 in FIG. 2A, so that corresponding reference numbers are also used here. One difference lies in the form of the gable surface 9: whereas the length L8 of the base surface 8 is constant over the entire width of the sleeve blank 1, the length of the gable surface 9 has different values. Adjacent to the outer partial areas 17B of the sleeve surface 17, the gable surface 9 has a reduced length L9.sub.min. In contrast, adjacent to the inner partial area 17A of the sleeve surface 17, the gable surface 9 has an increased length L9.sub.max. This design means that the inner partial area 17A has a lower height than the outer partial areas 17B. Also in the case of the sleeve blank 1, the sleeve blank 1 contains two secondary fold lines 18 in the region of the sleeve surface 17. The two secondary fold lines 18 are straight and run parallel to one another. Moreover, the secondary fold lines 18 run through a point of contact SB of three adjacent triangular surfaces 13 of the base surface 8 and through a point of contact SG of three adjacent triangular surfaces 13 of the gable surfaces 9.
[0081] FIG. 3B shows a second embodiment of a package sleeve according to the invention 10, which is formed from the sleeve blank 1 shown in FIG. 3A, in a front view. The package sleeve 10 in FIG. 3B largely corresponds to the package sleeve 10 in FIG. 2B, so that corresponding reference numbers are also used here. One difference lies in the increased length L9.sub.max of the gable surface 9 in its region adjoining the front partial area 17A of the sleeve surface 17.
[0082] FIG. 3C shows the package sleeve 10 from FIG. 3B in a rear view. The package sleeve 10 in FIG. 3C largely corresponds to the package sleeve 10 in FIG. 2C, so that corresponding reference numbers are also used here. One difference lies in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the outer partial areas 17B of the sleeve surface 17.
[0083] FIG. 3D shows the package sleeve 10 from FIG. 3B and FIG. 3C in the unfolded state. The package sleeve 10 in FIG. 3D largely corresponds to the package sleeve 10 in FIG. 2D, so that corresponding reference numbers are also used here. One difference lies in the increased length L9.sub.max of the gable surface 9 in its region adjoining the inner partial area 17A of the sleeve surface 17 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the outer partial areas 17B of the sleeve surface 17.
[0084] FIG. 3E shows the package sleeve 10 from FIG. 3D with pre-folded base and gable surfaces. The package sleeve 10 in FIG. 3E largely corresponds to the package sleeve 10 in FIG. 2E, so that corresponding reference numbers are also used here. One difference lies in the increased length L9.sub.max of the gable surface 9 in its region adjoining the inner partial area 17A of the sleeve surface 17 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the outer partial areas 17B.
[0085] FIG. 3E also shows the package sleeve 10 from FIG. 3D with pre-folded base and gable surfaces, for which reason corresponding reference numbers are also used here. The difference in comparison with FIG. 3E is that the triangular surfaces 13 are not folded outwards, but inwards.
[0086] FIG. 3F shows a second embodiment of a package according to the invention 15, which is formed from the package sleeve 10 shown in FIG. 3B, after welding. The package 15 in FIG. 3F largely corresponds to the package 15 in FIG. 2F, so that corresponding reference numbers are also used here. One difference lies in the increased length L9.sub.max of the gable surface 9 in its region adjoining the inner partial area 17A of the sleeve surface 17 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the outer partial areas 17B of the sleeve surface 17. The increased length L9.sub.max of the gable surface 9 leads to a large surface which can be used for a pouring element 19.
[0087] FIG. 3F also shows a second embodiment of a package according to the invention 15, which is formed from the package sleeve 10 shown in FIG. 3B, after welding. Corresponding reference numbers are therefore also used here. The difference in comparison with FIG. 3F is that the triangular surfaces 13 were not folded outwards, but inwards prior to welding. Therefore, the lugs 14 do not project outwards, but extend inwards. This leads to a shorter fin seam 16.
[0088] Finally, FIG. 3G shows the package 15 from FIG. 3F with folded-in lugs 14. The package 15 in FIG. 3G largely corresponds to the package 15 in FIG. 2G, so that corresponding reference numbers are also used here. One difference lies in the increased length L9.sub.max of the gable surface 9 in its region adjoining the inner partial area 17A of the sleeve surface 17 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the outer partial areas 17B of the sleeve surface 17. The increased length L9.sub.max of the gable surface 9 leads to a large surface which can be used for a pouring element 19. Due to the downward-sloping upper side of the package 15, such packages are also known as sloping gable-top packages.
[0089] Finally, FIG. 3G shows the package 15 from FIG. 3F with folded-in fin seam 16. Corresponding reference numbers are therefore also used here. The fin seam 16 is folded over and laid flat against the underside of the package 15, which is formed by two rectangular surfaces 12 of the base surface 8. Preferably, the fin seam 16 is adhesively bonded or welded with the package 15in particular with a rectangular surface 12. The difference in comparison with FIG. 3G lies in the structure of the base of the package 15: in FIG. 3G the lugs 14 are arranged beneath the rectangular surfaces 12 and are thus visible from the underside; in FIG. 3G, in contrast, the rectangular surfaces 12 are arranged beneath the lugs 14 and are thus visible from the underside.
LIST OF REFERENCE NUMERALS
[0090] 1, 1, 1: sleeve blank [0091] 2, 2: fold line [0092] 3, 4: side surface [0093] 5: front surface [0094] 6: rear surface [0095] 7: sealing surface [0096] 8: base surface [0097] 9: gable surface [0098] 10, 10, 10: package sleeve [0099] 11: longitudinal seam [0100] 12: rectangular surface [0101] 13: triangular surface [0102] 14: lug [0103] 15, 15, 15: package [0104] 16: fin seam [0105] 17: sleeve surface [0106] 17A, 17B: partial area (of the sleeve surface 17) [0107] 18: secondary fold line [0108] 19: pouring element [0109] EA: corner axis [0110] E8: corner point (of the base surface 8) [0111] E9: corner point (of the gable surface 9) [0112] SB: point of contact (of the triangular surfaces 13 of the base surface 8) [0113] SG: point of contact (of the triangular surfaces 13 of the gable surface 9
