Abstract
Provided is a package sleeve made of a composite material for the manufacture of a package, including: a front surface, a rear surface, two side surfaces, base surfaces and gable surfaces which are arranged on opposite sides of the two side surfaces, the front surface and the rear surface, and a longitudinal seam which connects two edges of the composite material to form a package sleeve. The package sleeve has several fold lines. The two side surfaces have a secondary fold line running therethrough. The package sleeve is folded along both secondary fold lines. The package sleeve is open both in the region of the base surfaces and in the region of the gable surfaces. 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 front surface, a rear surface, two side surfaces, base surfaces and gable surfaces which are arranged on opposite sides of the two side surfaces, the front surface and the rear surface, and a longitudinal seam which connects two edges of the composite material to form a circumferential package sleeve, wherein the package sleeve has several fold lines, wherein the two side surfaces in each case have a secondary fold line running through the side surface, and wherein the package sleeve is exclusively folded along both secondary fold lines, wherein the package sleeve is open both in the region of the base surfaces and in the region of the gable surfaces, wherein the composite material includes at least one layer of paper or paperboard which is covered on an edge of the longitudinal seam running within the package sleeve, wherein none of the fold lines intersect with one another but define extrapolated intersection points and wherein there is a region without fold lines between the fold lines and the intersection points extending a minimum distance in the range between 0.1 mm and 2.0 mm, and wherein at least one free-form surface is provided, the free-form surface extending between the base surfaces and the gable surfaces, and wherein two fold lines, which are curved in sections and straight in other sections, laterally limit the free-form surface towards two adjacent surfaces from the group of the two side surfaces, the front surface and the rear surface.
2. The package sleeve according to claim 1, wherein at least one of the fold lines does not run in a straight line, at least in sections, and is in particular curved or kinked.
3. The package sleeve according to claim 1, wherein the base surfaces contain corner points of the package and that the gable surfaces contain corner points of the package and that no continuously straight fold line is provided between at least one corner point of the base surfaces and the corner point of the gable surfaces associated therewith.
4. 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°.
5. The package sleeve according to claim 1, wherein the two secondary fold lines run parallel to one another.
6. The package sleeve according to claim 1, wherein the two side surfaces, the front surface and the rear surface are limited by fold lines.
7. The package sleeve according to claim 1, further comprising at least one free-form surface which is arranged between two adjacent surfaces from the group of the two side surfaces, the front surface and the rear surface.
8. The package sleeve according to claim 7, wherein the at least one free-form surface is limited by fold lines.
9. The package sleeve according to claim 1, wherein the gable surface adjoining the rear surface has a shorter length than the length of the gable surface adjoining the front surface.
10. The package sleeve according to claim 1, wherein the base surfaces and the gable surfaces in each case comprise two rectangular surfaces and six triangular surfaces.
11. The package sleeve according to claim 10, 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 surfaces.
12. The package sleeve according to claim 1, wherein the fold lines and/or 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.
13. 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.
14. The package sleeve according to claim 1, wherein the longitudinal seam connects together two partial areas of the rear surface.
15. The package sleeve according to claim 1, wherein the layer of paper or paperboard is covered by a sealing strip and/or by turning over the composite material in the region of the longitudinal seam.
16. The package sleeve according to claim 1, wherein the composite material is stripped in the region of the longitudinal seam.
17. The package sleeve according to claim 1, further comprising a material weakening in one of the gable surfaces, for fixing a pouring element.
18. A package made of a composite material, wherein the package is folded along the fold lines, wherein the package is sealed in the region of the base surface and in the region of the gable surface, and wherein the partial areas of both side surfaces adjacent to the secondary fold lines are in each case arranged relative to one another in an angular range between 160° and 200°, in particular between 170° and 190°, wherein the package is manufactured from a package sleeve according to claim 1.
19. The package according to claim 18, wherein the front surface and the rear surface are arranged in planes lying roughly parallel to one another.
20. The package sleeve according to claim 18, wherein the two side surfaces are arranged in planes lying roughly parallel to one another.
21. The package according to claim 18, further comprising lugs which are laid against the base surfaces in the lower region of the package.
22. The package according to claim 18, further comprising lugs which are laid against the side surfaces in the upper region of the package.
23. 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, b) the package sleeve along the fold lines between the side surfaces, the front surface and the rear surface, c) folding back the two side surfaces of the package sleeve along two secondary fold lines, and d) sealing the package sleeve in the region of the base surfaces, wherein step d) is carried out both after step b) and also after step c).
24. The method according to claim 23, wherein the steps b) and c) are carried out simultaneously.
25. The method according to claim 23, wherein after being folded back, the partial areas of a side surface of the package adjoining the secondary fold lines in each case once again lie in an angular range between 160° and 200°.
Description
BRIEF DESCRIPTION OF THE DRAWING
(1) 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:
(2) FIG. 1A: shows a sleeve blank intended for folding into a package sleeve known from the prior art,
(3) 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,
(4) FIG. 1C: shows the package sleeve from FIG. 1B in the unfolded state,
(5) FIG. 1D: shows the package sleeve from FIG. 1C with pre-folded base and gable surfaces,
(6) FIG. 1E: shows a package, known from the prior art, which is formed from the sleeve blank shown in FIG. 1A, after welding,
(7) FIG. 1F: shows the package from FIG. 1E with folded-in lugs,
(8) FIG. 2A: shows a sleeve blank for manufacturing a first embodiment of a package sleeve according to the invention,
(9) 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,
(10) FIG. 2C: shows the package sleeve from FIG. 2B in a rear view,
(11) FIG. 2D: shows the package sleeve from FIG. 2B and FIG. 2C in the unfolded state,
(12) FIG. 2E: shows the package sleeve from FIG. 2D with pre-folded base and gable surfaces,
(13) FIG. 2E′: shows the package sleeve from FIG. 2D with pre-folded base and gable surfaces,
(14) 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,
(15) 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,
(16) FIG. 2G: shows the package from FIG. 2F with folded-in lugs,
(17) FIG. 2G′: shows the package from FIG. 2F′ with folded-in fin seam,
(18) FIG. 3A: shows a sleeve blank for manufacturing a second embodiment of a package sleeve according to the invention,
(19) 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,
(20) FIG. 3C: shows the package sleeve from FIG. 3B in a rear view,
(21) FIG. 3D: shows the package sleeve from FIG. 3B and FIG. 3C in the unfolded state,
(22) FIG. 3E: shows the package sleeve from FIG. 3D with pre-folded base and gable surfaces,
(23) FIG. 3E′: shows the package sleeve from FIG. 3D with pre-folded base and gable surfaces,
(24) 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,
(25) 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,
(26) FIG. 3G: shows the package from FIG. 3F with folded-in lugs, and
(27) FIG. 3G′: shows the package from FIG. 3F′ with folded-in fin seam.
DESCRIPTION OF THE INVENTION
(28) 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.
(29) 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—in most cases already within a filling machine—so that they can be filled with contents, for example with foodstuffs. The filling can take place under aseptic conditions.
(30) 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.
(31) 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.
(32) 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.
(33) 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 15—in particular with the rectangular surfaces 12.
(34) 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, there are differences in the arrangement of those fold lines 2′ which divide the four large surfaces (i.e. the two side surfaces 3, 4, the front surface 5 and the rear surface 6) from one another. The four large surface 3, 4, 5, 6 are no longer in each case separated from one another by a straight fold line 2; instead, the four large surfaces 3, 4, 5, 6 are in each case separated from one another by two curved fold lines 2′, between which a free-form surface 17 is in each case arranged. A further difference is that the two side surfaces 3, 4 of the sleeve blank 1′ in each case contain a secondary fold line 18. 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.
(35) 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. 2A—also 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 therewith—i.e. along the corner axes EA.
(36) 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 6A, 6B of the divided rear surface 6 are then connected to 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. The edge of the longitudinal seam 11 running within the package sleeve 10′ is thereby covered. The covering of the open cut edge of the composite material has the purpose of preventing any contact between the contents of the package and this layer, in particular the paper layer or paperboard layer contained therein. The covering of the cut edge is in this case achieved by folding over the composite layer after it has been stripped beforehand. In the front view, the centrally-located front surface 5, which is limited on both sides by fold lines 2′, is visible. To either side, partial areas 3A, 4A of the side surfaces 3, 4 can be seen which are also limited laterally by fold lines 2′. The other partial areas 3B, 4B of the side surfaces 3, 4 are on the rear side of the package sleeve 10′ and are therefore hidden in FIG. 2B. Free-form surfaces 17 are provided between the fold lines 2′. The free-form surfaces 17 are arranged in the regions of the package sleeve 10′ which later form the (non-rectangular) “edges” of a package.
(37) 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 centrally-located rear surface 6 is visible which comprises two partial areas 6A, 6B connected by the longitudinal seam 11 and which is limited on both sides by fold lines 2′. To either side, partial areas 3B, 4B of the side surfaces 3, 4 can be seen which are also limited laterally by fold lines 2′. The other partial areas 3A, 4A of the side surfaces 3, 4 are on the front side of the package sleeve 10′ and are therefore hidden in FIG. 2C. Free-form surfaces 17 are also provided between the fold lines 2′ on the rear side of the package sleeve 10′. The free-form surfaces 17 are arranged in the regions of the package sleeve 10′ which later form the (non-rectangular) “edges” of a package body. At least one free-form surface (17) is provided extending between the base surfaces (8) and the gable surfaces (9), and wherein two fold lines (2, 2′), which are curved in sections and straight in other sections, laterally limit the free-form surface (17) towards two adjacent surfaces (3, 4, 5, 6) from the group of the two side surfaces (3, 4), the front surface (5) and the rear surface (6).
(38) 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 can be achieved through several folding steps: Firstly, the package sleeve 10′ is folded along the fold lines 2′, which are arranged between the four large surfaces 3, 4, 5, 6 and the four free-form surfaces 17. Secondly, the package sleeve 1′ is folded back along the secondary fold lines 18 running through the side surfaces 3, 4. The sleeve is folded back by around 180°. This folding back along the secondary fold lines 18 has the consequence that the two partial areas 3A, 3B of the first side surface 3 adjoining the secondary fold line 18 no longer lie on top of one another but are arranged in the same plane. In a corresponding manner, the folding back along the secondary fold lines 18 has the consequence that the two partial areas 4A, 4B of the second side surface 4 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.
(39) 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. 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.
(40) 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.
(41) FIG. 2F shows a first embodiment of a package 15′ according to the invention, 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 and fixed flat in a later manufacturing step, for example by means of an adhesive bonding or welding process.
(42) FIG. 2F′ also shows a first embodiment of a package 15′ according to the invention, 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 15.
(43) 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 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 15′—in particular with the rectangular surfaces 12. In the package 15′ represented in FIG. 2G, the front surface 5 and the rear surface 6 are arranged parallel to one another. The two side surfaces 3, 4 are also arranged parallel to one another in the package 15′. Angles of around 90° are in each case formed between adjacent surfaces of the four large surfaces 3, 4, 5, 6. However (unlike the package 15 from FIG. 1F), the transition between the four large surface 3, 4, 5, 6 is created not through tangular edges, but through free-form surfaces 17 of geometrically complex form.
(44) 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 15′—in 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.
(45) 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 rear surface 6, the gable surface 9 has a reduced length L9.sub.min. Adjacent to the front surface 5, the gable surface 9 has, in contrast, an increased length L9.sub.max. This design means that the front surface 5 has a lesser height than the rear surface 6. The side surfaces 3, 4 provide a transition between the different heights of the front surface 5 and the rear surface 6, for which reason, in the case of the sleeve blank 1″ (unlike the sleeve blank 1 and the sleeve blank 1′), the side surfaces 3, 4 are not rectangular, but have an obliquely sloping upper edge. In the case of the sleeve blank 1″ too, the two side surfaces 3, 4 each contain a secondary fold line 18. 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.
(46) 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 surface 5.
(47) 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 rear surface 6.
(48) 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 front surface 5 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the rear surface 6.
(49) 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 front surface 5 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the rear surface 6.
(50) 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.
(51) 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 front surface 5 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the rear surface 6. 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.
(52) 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 15.
(53) 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. Here too, one difference lies in the increased length L9.sub.max of the gable surface 9 in its region adjoining the front surface 5 as well as in the reduced length L9.sub.min of the gable surface 9 in its region adjoining the rear surface 6. 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.
(54) Finally, FIG. 3G′ shows the package 15″ from FIG. 3F′ with folded-in fin seam 15. Corresponding reference numbers are therefore also used here. The fin seam 15 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 15 is adhesively bonded or welded with the package 15″—in 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
(55) 1, 1′, 1″: sleeve blank 2, 2′: fold line 3, 4: side surface 3A, 3B, 4A, 4B: partial area (of the side surface 3, 4) 5: front surface 6: rear surface 6A, 6B: partial area (of the rear surface 6) 7: sealing surface 8: base surface 9: gable surface 10, 10′, 10″: package sleeve 11: longitudinal seam 12: rectangular surface 13: triangular surface 14: lug 15, 15′, 15″: package 16: fin seam 17: free-form surface 18: secondary fold line 19: pouring element L8: length (of the base surface 8) L9.sub.min: minimum length (of the gable surface 9) L9.sub.max: maximum length (of the gable surface 9) EA: corner axis E8: corner points (of the base surface 8) E9: corner points (of the gable surface 9) SB: point of contact (of the triangular surfaces 13 of the base surface 8) SG: point of contact (of the triangular surfaces 13 of the gable surface 9)
