Method for producing a packaging bag, packaging bag, and use of a packaging bag

Abstract

The invention relates to a production method for a carrier bag which can be produced or is produced from a foldable material piece (8), wherein the material piece (8) is separated by a separation method from a rolled-up material web (2) which extends along a material web longitudinal direction M and has material web sides (2A, 2B) which are spaced apart from one another over the material, wherein the separated material piece (8) is delimited by two cut sides which are spaced apart from one another along the material web longitudinal direction M and extend transversely with respect thereto and by the material web sides (2A, 2B) which are spaced apart from one another, and wherein at least one transport tab (8A) is provided on a cut side, by way of which transport tab the carrier bag, folded and consolidated from the material web (2), or the material web (2) can be plugged in a consolidated state onto a transport device. In order to reduce the throughput times during production, it is proposed that a separation profile of the separation method is guided in such a way that the at least one transport tab (8A) is formed in each case on the mutually adjoining cut sides of the separated material piece (8) and of the material web (2).

Description

[0001] Description

[0002] Method for manufacturing a packaging bag, packaging bag and use of a packaging bag

[0003] The invention relates to a manufacturing process for a packaging bag or carrier bag that can be produced or is produced from a foldable piece of material.

[0004] The piece of material is separated, for example, from a rolled-up roll of material extending along the longitudinal direction of the material web by a separation process, in particular by cutting the rolled-up roll of material with sides that laterally define the material web and are separated from each other. The separated piece of material is bounded by two cut edges that extend transversely to the longitudinal direction of the material web and are spaced apart from each other, as well as by the material web itself, which is also spaced apart from each other. The cut edges and the material web edges thus form the edges of the piece of material.

[0005] The piece of material is usually rectangular or square in shape, bounded in the longitudinal direction of the material web by the cut sides and in the transverse direction to the longitudinal direction of the material web by the material web sides.

[0006] Finally, at least one transport flap is provided on one cut side, with which the folded and folded carrier bag or the folded material web can be attached to a transport device, in particular by means of a clip. Using this transport flap, the cut, folded, and optionally glued packaging bag or carrier bag is attached to the transport device, in particular by means of holes provided in the transport flap, and transported, for example, to the end customer for further use, where it is unfolded and filled.

[0007] To manufacture the packaging bag from the piece of material, two opposite edges of the material are folded together to form a tube and joined, preferably by gluing. This tube is open at both ends. A base for the packaging is then formed at one of the open ends of the tube, for example, by folding a so-called cross bottom and gluing the resulting bottom flaps. The opening opposite the base is initially left open and serves as a filling opening for the goods to be packaged. The side opposite the filling opening is therefore usually referred to as the base of the bag. The width of such a packaging bag according to the prior art thus runs along the folded base, and the length from the base to the filling opening. The base width is the distance between the folds of the flaps of the cross bottom.After the packaging bag is filled, the opening can also be closed, for example by gluing, welding, or sewing the front and back of the bag together. The side walls of such a packaging bag are simply formed from sections of the previously manufactured tube. Typically, these bags are dimensioned so that the bottom and top surfaces of the bag, i.e., where the filling opening was previously located, are significantly smaller than the front and back of the bag. They are also usually smaller, particularly because they are considerably shorter than the side walls.

[0008] This means that the filling opening is smaller in cross-section than the side walls or the front and back.

[0009] A different method is disclosed in EP 3 095 723 A1, which discloses a manufacturing process for a bread bag. A bread bag is a relatively simple packaging product that does not have a particularly complex fold, or at least not a cross bottom, and where a cross bottom cannot be produced using the method described in this document.

[0010] Further prior art, unrelated to this category, is disclosed in AT 514 545 A4 and US 4,232,592.

[0011] Disadvantages of the current state of the art

[0012] The production of the transport flaps is currently relatively time-consuming in relation to the overall production of a packaging bag, because they either have to be cut out of the sides, especially the cut sides of the piece of material, or glued on afterwards, which determines the lead times for the production of the carrier bag.

[0013] Task

[0014] Based on the aforementioned prior art and its associated disadvantages, the invention aims to at least partially avoid the disadvantages mentioned above and, in particular, to provide a packaging bag that is more cost-effective, simpler and faster to produce.

[0015] invention

[0016] This task or technical problem is already solved by the features of the independent claims. Advantageous, but not essential, features are described in the dependent claims.

[0017] In its most abstract form, the problem is solved by conducting the separation process in such a way that at least one transport flap is formed on each of the adjacent cut surfaces of the separated material piece and the material web. The transport flap is thus separated by a single separation operation, in particular a single cut, to separate a first material piece from the adjacent material web. According to the invention, the separation does not occur along a straight separation path, i.e., not only along a transverse line Q extending perpendicular to the longitudinal direction of the material web, but can include steps, slopes, edges, or curves to form the transport flap on one separation element (material web or material piece) and the bottom flap on the other separation element.The separation therefore does not take place along a straight line, but is carried out in a step or curve profile, preferably always in such a way that no cutting occurs at the other end of the running direction of the material web.

[0018] In other words, the separated piece of material and the adjacent material web are completely complementary to each other along the separation line, meaning that when joined together they form a complete material web.

[0019] In particular, the separation at the end forming the upper end with the filling opening of the carrier bag creates at least one projection extending from the material piece along a transverse line (Q) perpendicular to the central longitudinal direction (M), forming the transport flap or at least a part thereof. Consequently, complementary to this transport flap projecting beyond the imaginary central line, at least one material-free depression is formed on the adjacent material web, i.e., a material-free area that can be recessed relative to the imaginary transverse line.

[0020] This results in the folding bags according to the invention having a longer bottom flap on the cross bottom, i.e., a bottom flap that extends further to or beyond the middle fold line, and a shorter bottom flap compared to this longer bottom flap, which preferably does not extend or only extends to the middle fold line of the bottom.

[0021] The transition between the protruding or projecting transport tab and the area set back from the transport tab can, for example, be formed in the form of a right-angled step or include a slope that forms an acute angle with the central longitudinal direction, preferably an angle of 45 degrees.

[0022] The separation process can be carried out in any suitable way, i.e. with a conventional knife cut, but also with a laser cut or in any other suitable way compatible with the material to be cut.

[0023] Preferably, at the separation point between the separated piece of material and the material web, the transport flap or parts thereof are formed on one cut side and the bottom flap to form a cross bottom or parts thereof is formed on the other cut side.

[0024] According to the invention, the separation path can include slopes, in particular with a cross-section running transversely to the longitudinal direction of the material, a separation path including, in particular, a 45 degree angle, or a right-angled separation path to form a step cut, or also a curved separation path.

[0025] According to the procedure, after separation the piece of material is creased, folded and the free ends are joined together, which is done in particular by gluing, but can also be done by mechanical joining methods, e.g. by stapling to form a folded cross-bottom pocket.

[0026] Embodiments include a part projecting from the carrier bag for use as a flap for the packaging bag or carrier bag.

[0027] The transport flap, which thus represents a section or section length projecting beyond the cut edges, preferably has a recess or opening. Preferably, at least two recesses, and in particular exactly two recesses, are provided in the transport flap, which constitutes a further process step.

[0028] The at least one recess is designed, for example, as a hole or slot, particularly a cross-shaped slot. It is created, for example, by punching, using a laser, or by other suitable methods. The at least one recess facilitates the positioning of the packaging bag or transport bag during filling or packaging after production. For this purpose, eyelets or sleeves can be inserted into the at least one recess, or the packaging bag can be attached to these eyelets, sleeves, or simply transport rods. This can be done manually or automatically, and, for example, individually for each packaging bag.

[0029] Preferably, in a further process step, several packaging bags are stacked on top of each other with their transport flaps in such a way that the recesses at least overlap or align. Subsequently, a transport device can be inserted into the recesses, or the packaging bags can be placed onto the transport device, so that the packaging bags are connected and form a stack. Forming the stack of bags can constitute part of the manufacturing process for the packaging bag.

[0030] Preferably, for the proposed method, in particular for the production of the packaging sack or carrier bag, a stable and in particular stretchable paper is used, which is also referred to as "kraft paper".

[0031] Kraft papers of this type are particularly preferred when produced using a sulfate or kraft pulping process, either as pure cellulose or wood pulp. Depending on the required stability, kraft papers with a basis weight of 40 to 130 g / m² are particularly common. 2 (grams per square meter) according to ISO 536:2019 used per paper layer.

[0032] These papers exhibit a maximum possible elongation before break of greater than or equal to 4 percent according to ISO 1924-3:2005 in both the machine and transverse directions, the transverse direction typically extending at a right angle to the machine direction. Particularly preferably, such a paper allows a maximum elongation at break of 5 to 12 percent (elongation before break) according to ISO 1924-3:2005.

[0033] Preferably, the elongation is at least 4 percent, more preferably at least 5 percent, more preferably at least 6 percent, even more preferably at least 7 percent, and more preferably at most 12 percent, more preferably at most 11 percent, more preferably at most 10 percent, and even more preferably at most 9 percent. Generally, higher elongations at break and higher basis weights are advantageous for packaged goods that require a greater weight and / or greater compression of the packaged material.

[0034] The stability of the paper bag can be customized by using paper with different grammage (gram weight per square meter of paper) and / or higher elongations at break.

[0035] The preferably stretchable kraft paper has a basis weight of at least 40 g / m². 2 , preferably at least 50 g / m² 2 , preferably at least 60 g / m² 2 , even more preferably 70 g / m² 2even more preferred 80 g / m² 2 and at most 130 g / m² 2 , preferably no more than 120 g / m² 2 , preferably not more than 110 g / m² 2 , preferably no more than 100 g / m² 2 on.

[0036] For individual items such as diapers, kitchen rolls, or toilet paper rolls, average values ​​of these basis weights and elongations at break have proven particularly suitable. Examples of papers at the lower end of their strength range are:

[0037] Properties Method Typical values ​​(Please choose 2 - 10 of the usual grammage)

[0038] Base weight g / m² 2 ISO 70 75 80 85 90 100

[0039] 536:2019

[0040] Tensile strength kN / m ISO md 5.6 6.0 6.4 6.8 7.2 8.0

[0041] 1 924- cd 4.1 4.4 4.6 4.9 5.2 5.8

[0042] 3:2005

[0043] Tensile index Nm / g ISO md 80 80 80 80 80 80

[0044] 1 924- cd 58 58 58 58 58 58

[0045] 3:2005

[0046] Elongation at % ISO md 5.8 5.8 5.8 5.8 5.8 5.8

[0047] fracture

[0048] 1 924- cd 7.4 7.4 7.4 7.4 7.4 7.4

[0049] 3:2005

[0050] Absorption of J / m 2 ISO md 200 215 230 245 260 290

[0051] Tensile Energy 1924- (Tensile Energy 3:2005 cd 200 215 230 2456 260 290

[0052] Absorption - TEA)

[0053] TEA Index J / g ISO md 2.9 2.9 2.9 2.9 2.9 2.9

[0054] 1924- cd 2.9 2.9 2.9 2.9 2.9 2.9

[0055] 3:2005

[0056] Tear index mN.m 2 / g ISO md 10.5 10.5 10.5 10.5 10.5 10.5

[0057] 1924- cd 11.5 11.5 11.5 11.5 11.5 11.5

[0058] 3:2005

[0059] Air resistance s ISO 15 15 15 15 15 15

[0060] (Gurley) 5636-

[0061] 5:2013

[0062] Cobb g / m 2ISO 535 32 32 32 32 32 32

[0063] “md” means “in machine direction”, i.e. longitudinal direction and “cd” means “in cross direction”, i.e. in transverse direction.

[0064] Such stable and extensible papers and products made from them are available from the applicant under the trade name “Advantage Semi Extensible” or “Advantage SE”, which are characterized by a particularly high absorption of tensile energy, excellent runnability and also exist in a wet-strength quality.

[0065] The transport device, in particular designed as a sleeve or transport rod(s), preferably consists of a plastic material and can also be referred to as a plastic spool. Preferably, the sleeve has a through hole for receiving a wire, pin, or rod that can be used for positioning. In this way, the packaging bag can be used.

[0066] The transport device or sleeve is preferably dumbbell-shaped.

[0067] Preferably, the sleeve is multi-part, particularly two-part. A two-part sleeve preferably consists of a lower part and an upper part. The lower part is, for example, designed as a hollow cylinder with a plate-shaped widening or projection at one end, preferably molded on. The upper part and the lower part can be fixed or connected to each other and, for this purpose, have corresponding positive-locking elements. To insert the sleeve into the recesses of the packaging bag or to place the packaging bags onto the transport device comprising the sleeves, the hollow cylinder is guided through or inserted into the overlapping recesses of the packaging bag. The upper part is then attached to the other end of the lower part.The upper part preferably also has a plate or mushroom head shape so that the packaging bag cannot slip off the hollow cylinder or transport device when the sleeve is assembled, i.e., it is permanently fixed to it.

[0068] The manufacturing process for the packaging bag includes the formation of a cross-shaped bottom, particularly at its lower end. Cross-shaped bottoms are generally known. They are commonly used in packaging bags to close them and form a bag bottom. First, the ends of the material piece are joined to form a completely closed tube. In its unfolded state, i.e., when lying flat, this tube has two closed edges: an upper edge and a lower edge.

[0069] If cross-shaped edges are formed at an open side edge, preferably the lower one, these are bounded laterally by the closed edges, resulting in a closed cross-shaped edge. The cross-shaped edge, open on one side, can be formed by folding in a known manner. For this purpose, for example, the corners at the closed edge are grasped and folded inwards between the first and second web sections. This creates two flaps, one in the first web section and one in the second. These flaps are at least partially overlapped and joined together. This is preferably done by gluing or bonding, but can also be done by clamping, riveting, or similar methods. Alternatively, it is possible to first make cuts in the web sections to create flaps for forming the cross-shaped edge, open on one side.These cuts are made, for example, after folding and / or are already at least partially, in particular completely, provided in the supplied material piece.

[0070] After the flaps are joined, the open-ended cross bottoms form the base of the packaging bag. Securing the base can be part of the packaging bag's manufacturing process. However, it is also possible to do this later, for example, during the filling process.

[0071] The cross bottoms are preferably designed to have the same cross bottom width. However, it is also possible, and in certain embodiments advantageous, to fold the cross bottoms differently so that they have different cross bottom widths. This is advantageous, for example, if the packaging bag is intended to hold asymmetrically shaped packages.

[0072] A so-called bottom paper can be applied, particularly glued, to one or both of the open-ended cross bottoms. This bottom paper serves to reinforce and laminate the bottom. It is also possible to apply such paper not only to the outside of the open-ended cross bottoms, where the finished packaging bag has its outer sides, but alternatively or additionally to the inner sides as well. The bottom paper applied to the outer sides preferably has carrying handles or flaps that can be used as carrying handles. However, more recently, bottom paper is increasingly being omitted to avoid and reduce waste.

[0073] Opposite the folded bottom is the filling opening of the packaging bag. This extends across the entire width of the bag, which makes filling particularly easy with large and / or complex items. Filling with bulk goods is also facilitated, as the cross-section of the filling area can be significantly larger than with conventional bags of the same size, allowing for simpler and faster filling.

[0074] The finished packaging bag preferably has a width of 160 mm to 650 mm. The width of the bag is defined identically to the prior art, namely as an extension along the bottom, i.e., the part of the packaging bag opposite the filling opening. However, it should be noted that in the prior art, the cross bottom also forms the bottom of the packaging bag. The length of the bag according to the invention therefore corresponds to the length of the cross bottoms, which are open on one side, from the bottom to the filling opening.

[0075] Lengths and widths are preferably measured in the folded state, not in the unfolded state of the packaging bag. The length of the packaging bag is preferably 280–870 mm. The width of the folded bottom, which is preferably identical to the width of the cross bottom, is preferably 50 mm to 250 mm.

[0076] The method according to the invention makes it particularly possible to use existing manufacturing machines, especially floor layers for folding, on which a maximum width between 180 mm and 740 mm can be produced.

[0077] The packaging bag can be fitted with a sealing element, thus integrating the application of the sealing element into the manufacturing process. In many cases, the filling opening must be sealed after filling with the packing material to contain the contents within the packaging bag. The sealing element, which can be, for example, an adhesive strip with a release liner, serves this purpose. Other sealing elements, such as eyelets for threading a strap or hook-and-loop fasteners, can also be used.

[0078] Preferably, the sealing element consists of an applied coating, which is applied over the entire surface or in certain areas, particularly in strips or spots. Preferably, exactly one strip of coating is applied. The coating is preferably applied in an amount of 3 to 35 g / m². The coating consists, for example, at least partially, and in particular entirely, of an adhesive and / or a heat-sealable material. Preferably, the coating has a heat-sealable dispersion coating and consists entirely of it. Alternatively, the packaging bag can be closed by providing a sealing seam using ultrasound. Preferably, a portion of the packaging bag extending beyond the sealing seam is also cut off. This is, in particular, the preferably protruding part, i.e., the flap.

[0079] It is preferred, but not necessary, that the at least one sealing element extends over one or both cross bottoms. The sealing element is preferably located in the area of ​​the filling opening, also referred to as the sealing area, preferably in the half closest to the filling opening, and in particular in the quarter closest to the filling opening, of the first and / or second web section. The sealing element is preferably located on the inside and outside of the packaging bag, which, after closing, joins the inserted side gussets to create a clean finish to the packaging.

[0080] According to another aspect, the invention relates to a packaging bag that is manufactured or can be manufactured according to such a method.

[0081] Furthermore, the invention relates to the use of such a packaging bag for packaging individual items, in particular hygiene products, diapers, kitchen rolls or toilet paper rolls, but also bulk goods. In addition, the packaging bag is preferably used for packaging spare parts, especially from the automotive industry.

[0082] The following detailed description of the figures refers to the accompanying drawings, which form part of this description of the invention and illustrate specific embodiments with which the invention can be carried out. In this respect, directional terminology such as "top," "bottom," "front," "back," "anterior," "rear," etc., is used in relation to the orientations of the described figure(s). Since components of embodiments can be positioned in a number of different orientations, the directional terminology serves for illustration and is in no way limiting. It is understood that other embodiments can be used and structural or logical modifications can be made without deviating from the scope of protection of the present invention. The following detailed description is not to be interpreted in a limiting sense.

[0083] Within the scope of this description, the terms "connected", "attached" and "integrated" are used to describe both a direct and an indirect connection, a direct or indirect connection, and a direct or indirect integration.

[0084] Unless otherwise specified, the indefinite and definite articles do not refer to a single component but are to be understood as "at least one". The terminology includes the aforementioned words, variations thereof, and similar meanings. Furthermore, it should be understood that the terms "approximately", "essentially", and similar terms, when used in conjunction with the dimensions and a property of a component of the invention, do not define the described dimension and property as strict limits or parameters and do not exclude minor variations thereof that are functionally similar. At a minimum, descriptive parts with numerical parameters also include variations of these parameters according to the mathematical and manufacturing principles in the prior art, e.g., rounding, deviations and other systematic errors, manufacturing tolerances, etc.

[0085] In the figures, identical or similar elements are marked with the same reference symbol, where appropriate. Reference lines are lines that connect the reference symbol to the relevant part. An arrow, however, that does not touch any part, refers to the entire unit to which it points. Furthermore, the representations in the figures are not necessarily to scale. To illustrate details, certain areas may be shown exaggeratedly large. In addition, the drawings may be simplified for illustrative purposes and do not include every detail that might be present in practical implementation.

[0086] The manufacturing process according to the invention is described below by way of example with reference to the figures. All features of the respective embodiment are disclosed here independently and separately from other features of the respective embodiment. Likewise, the features mentioned above and those described further can each be used individually or in any combination according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples for the description of the invention.

[0087] They show:

[0088] Figure 1 shows a schematic top view of a cutting arrangement for producing the piece of material by cutting from a web of material rolled onto a roll of material;

[0089] Figure 2 shows a side view of the cutting arrangement according to Figure 1;

[0090] Figure 3 shows an enlarged top view of the piece of material separated from the material web at the moment shortly after the separation cut to carry out the separation process;

[0091] Figure 4 shows a top view of the piece of material with the incorporated fold lines in the unrolled, flat state;

[0092] Figure 5 shows a top view of the piece of material rotated 90° to the right relative to the representation in Figure 4 and glued together to form a tube;

[0093] Figure 6 shows the top view of the flat-lying transport bag with the cross bottom open and not yet glued; Figure 7 shows the top view according to Figure 6 with the flaps of the cross bottom on the left side of the figure folded in and glued; and

[0094] Figure 8 shows the top view of the carrying bag according to Figure 6, also with the timely flap of the cross bottom folded in.

[0095] The material web 2 is wound at one end onto a material web roller 4, which rotates around a central axis.

[0096] From this material web roll 4, the material web 2 is unwound and fed via a pulling device (not shown) to a cutting device 6, which carries out the separation process in a transverse direction Q running transversely to the longitudinal direction M of the material web and thereby separates the piece of material 8 from the material web 2 along the separation path.

[0097] In this embodiment, the material web 2 has parallel material web sides 2a, 2b, which can also be referred to as material web longitudinal edges or simply longitudinal edges and which limit the material web 2 on both sides.

[0098] Figure 3 shows the material web 2 and the material piece 8 separated from it shortly after the separation process. It is clearly visible that the separation path between the material web 2 and the material piece 8 is not straight, i.e., not perpendicular to the longitudinal direction M of the material web, but rather, during the separation, a transport tab 8a is formed integrally on the cut side of the material piece 8, projecting from an imaginary transverse line Q extending at a right angle to the longitudinal direction M of the material web.

[0099] Corresponding to this transport flap 8a, a recess forming a depression 2c is formed in the adjacent cut side of the material web 2, which is thus complementary to the transport flap 8a and is in this case laterally bounded by two end flaps 2d, 2e, which are again formed integrally on the material web 2 and enclose the recess 2c on both sides.

[0100] Figure 4 then shows a flat top view of the piece of material 8 after folding with the fold lines shown in dashed lines, i.e. lying flat on a surface before gluing.

[0101] Figure 5 shows a top view of the material web 8 glued together to form a tube. The material web shown in Figure 4 has been rotated 90° clockwise, and the two ends, specifically the material web sides 2a and 2b of the material piece 8, are glued together along the adhesive line 10. Thus, the filling opening of the carrier bag is formed at the left end in the figure, with the transport flap 8a located there. At the opposite end of the filling opening, provided with the transport flap 8a, the bottom of the carrier bag is formed in a known manner by two cross-shaped bases.

[0102] Figure 6 shows the two cross-shaped bottom sections laid flat, i.e., lying flush in the plane of the carrier bag, resting on the sides of the carrier bag, with the two bottom flaps 8b and 8c also unfolded. According to the invention, the bottom flap 8b on the right side of the figures is larger or longer, in particular 20-30 percent longer than the shorter bottom flap 8C on the left side of the figures, which is achieved by the design of the recess 2c.

[0103] Figure 7 then shows the shorter bottom flap 8c placed on top of the cross bottoms or glued to the two cross bottoms.

[0104] In Figure 8, the longer bottom flap 8b is also placed on or folded over the cross bottoms and can be glued to them. Here, too, it is clearly visible that the longer bottom flap 8b extends beyond the central fold line in the bottom, whereas the shorter bottom flap 8c does not extend to the central fold line. Cross-shaped incisions 8d, 8d are now made in the transport flap 8a as transport openings, preferably two transport openings equidistant from the center line or the central adhesive line 10. Additionally, a bottom paper covering the bottom flaps 8b, 8c can be applied to reinforce the bottom. This paper is preferably rectangular and covers the central, rectangular section of the cross bottom.

[0105] Reference symbol list

[0106] M Material web longitudinal direction

[0107] Q cross line

[0108] 2 Material track

[0109] 2a, 2b Material web sides

[0110] 4 Material web roll

[0111] 2c Exclusion

[0112] 2d, 2d End Tab

[0113] 6 cutting devices

[0114] 8 pieces of material

[0115] 8a Transport flap

[0116] 8b longer bottom flap

[0117] 8c shorter bottom flap

[0118] 8d, 8e incision

Claims

Patent claims 1. Manufacturing method for a carrier bag that can be produced or is produced from a foldable piece of material (8), wherein the piece of material (8) is separated by a separation process from a rolled-up web of material (2) extending along a longitudinal direction (M) of the material web, with web sides (2a, 2b) spaced apart from each other across the material, wherein the separated piece of material (8) is bounded by two cut edges spaced apart from each other along the longitudinal direction (M) of the material web and extending transversely to it, and the web sides (2a, 2b) spaced apart from each other, and wherein at least one transport flap (8a) is provided on one cut edge, with which the carrier bag folded and folded from the web of material (2) or the web of material (2) in a folded state can be attached to a transport device. INDICATED BY the fact that a separation process is carried out in such a way that at least one transport flap (8a) is formed on the adjacent cut sides of the separated piece of material (8) and the web of material (2) and that after the separation the piece of material (8) is folded, creased and free ends are joined together to form a folded, one-sided open cross-bottom pocket.

2. Manufacturing process according to claim 1 , INDICATED BY THIS, that the separation profile includes steps, slopes, edges or curves in relation to a cross-section (Q) running perpendicularly transverse to the longitudinal direction.

3. Manufacturing process according to one of the preceding claims, INDICATED BY THE SURROUNDING that the material comprises a paper-based material, paper or film.

4. Manufacturing process according to claim 3, INDICATED BY the fact that the paper-based material includes kraft paper, in particular kraft paper with a basis weight of 40 to 130 g / m² 2 (grams per square meter).

5. Manufacturing process according to claim 4, INDICATED BY THE FACTOR THAT THE kraft paper has a basis weight of at least 40 g / m² 2 , preferably at least 50 g / m² 2 , preferably at least 60 g / m² 2 , even more preferably 70 g / m² 2 even more preferred 80 g / m² 2 and preferably no more than 130 g / m² 2 , preferably no more than 120 g / m² 2 , preferably no more than 110 g / m² 2 , preferably no more than 100 g / m² 2 exhibits.

6. Manufacturing process according to claim 3 or 4, DISTINGUISHED BY the fact that the stretchable, paper-based material, in particular the kraft paper, has an elongation at break greater than or equal to 4 percent, preferably an elongation at break greater than or equal to 5 percent, particularly preferably an elongation at break greater than or equal to 6 percent, further preferably an elongation at break greater than or equal to 7 percent and preferably an elongation at break of at most 12 percent, preferably an elongation at break of at most 11 percent, particularly preferably a Elongation at break of at most 10 percent, and preferably an elongation at break of at most 9 percent.

7. Cross-bottomed pocket, characterized by being manufactured according to one of the preceding method claims.

8. Use of a cross-bottom bag, in particular according to claim 7, for packaging general cargo, in particular diapers, kitchen paper or Toilet paper rolls, or for bulk goods.

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