Plastic carrier bag

Abstract

The present invention relates to a plastic carrier bag (1) comprising a continuous front (6) and rear wall (8) as well as a first (102) and an opposite second side wall (104), wherein the front and rear walls (6, 8) and the first and second side walls (102, 104) are designed in one or more layers, wherein the front and rear walls (6, 8) merge into one another at the bottom end (2) by means of folding over, wherein the extension of the front and rear walls (6, 8) tapers in the region (114) of the lower third, wherein the lateral extension of the first and second side walls (102, 104) decreases in a corresponding manner in each case corresponding to the region in which the extension of the front and rear walls (6, 8) tapers, and wherein the opening edge (15) of the first side wall (102) and the Opening edge (15') of the second side wall (104) is below the opening edges (14, 14) of the front wall (6) and rear wall (8).

Description

[0001] The present invention relates to a reusable and recyclable plastic carrier bag.

[0002] Plastic carrier bags are often particularly advantageous from an ecological and economic perspective compared to paper carrier bags if they are frequently reusable and easily recycled. Reusable plastic carrier bags must meet specific stability criteria, especially since they are often larger and have carrying loops on the front and back. Conventional loop bags are described, for example, in DE 101 16 920 A1, WO 01 / 51372 A1, and DE 40 12 897 A1. These prior art loop bags often lack sufficient mechanical stability for the repeated carrying of heavy loads.

[0003] In some cases, it has proven difficult to meet the growing demand for larger, reusable plastic carrier bags using essentially automated mass production processes, as well as the very high quality standards of commercial users of loop-type carrier bags, such as department stores and hypermarket chains. These requirements often include the ability to fill empty carrier bags with both hands without any other assistance or separate devices. In other words, even empty carrier bags, especially larger ones, must be able to stand freely without being filled, while simultaneously ensuring unhindered access.

[0004] The present invention was therefore based on the object of providing plastic carrier bags, in particular large-sized reusable plastic carrier bags, that do not suffer from the disadvantages of prior art carrier bags and are particularly suitable for the repeated, reliable transport of even heavy loads. Furthermore, the invention was also based on the object of making reusable plastic carrier bags available that can be filled with both hands, even when empty, without any other assistance or separate devices.

[0005] Accordingly, a plastic carrier bag with a bottom end and an opposite opening end was found, comprising a front wall and a rear wall, each with a first side edge and an opposite second side edge and an opening edge, as well as a first and an opposite second side wall, each with a first and an opposite second side edge and an opening edge, wherein the first and the second side wall are designed as one or more layers, in particular single-layered, and at least one holding loop connected to the front wall and / or, in particular and, at least one holding loop connected to the rear wall, each with a first and a second connection region; wherein the front and the rear wall are designed as one or more layers, preferably double-layered;wherein the front and rear walls are continuous, in particular integral, and merge into one another at the bottom end by folding over, in particular forming a bottom fold at this transition; wherein the transition, in particular the bottom fold, extends laterally from a first to an opposite second end; wherein, when the front and rear walls are in contact with one another up to the transition, in particular the bottom fold (also called a "stackable storage state"), the lateral extent of the transition, in particular of the bottom fold, between the first and second ends is less than the extent of the front and rear walls between the respective first and second side edges at the opening end;wherein the extent of the front and rear walls between the respective first and second side edges tapers in the region of the lower third, in particular the lower quarter, relative to the extent between the opening end and the bottom end, in the direction of and in particular up to the transition, in particular to the bottom fold (also called the "tapering / bottom area area"); wherein the lateral extent of the first and second side walls in the tapering / bottom area decreases in each case, in particular in a corresponding manner, corresponding to the area in which the extent of the front and rear walls tapers between the respective first and second side edges;wherein the first side wall is welded to the front wall in the region of its first side edge in the region of its first side edge, and to the rear wall in the region of the second side edge, in particular along its first side edge, and wherein the second side wall is welded to the front wall in the region of its first side edge in the region of its first side edge, and to the rear wall in the region of the second side edge, in particular along its second side edge, wherein the opening edge of the first side wall and the opening edge of the second side wall, with respect to the opening end, are each located below the opening edges of the front wall and rear wall, in particular below the first and second connection regions of the holding loops of the front wall and / or, in particular, the rear wall.;

[0006] Unless expressly stated otherwise, the descriptions of the plastic carrier bag according to the invention are based on a state in which the front and rear walls lie flat against one another on a level surface. In this state, the plastic carrier bags according to the invention can be stacked on top of one another in a flat state. This state can also be referred to as a "stackable storage state." In the plastic carrier bags according to the invention, the bottom fold in the stackable storage state particularly preferably represents an outward-facing bottom fold. By moving the front and rear walls apart, the plastic carrier bag according to the invention transitions into an upright filling state, forming the bottom region.

[0007] With the plastic carrier bag according to the invention described above, plastic carrier bags with a large capacity become accessible using large-scale industrial production technology. This is achieved, among other things, by the fact that the side walls are integrated into front and rear walls that taper down to the transition, in particular to the bottom fold, and during the filling process, parts of each become part of a, in particular essentially rectangular or square, base area. Surprisingly, this, in particular essentially rectangular or square, base area can also be obtained when empty by simply reaching into the interior of the bag and moving the front and rear walls apart. In this filled state, the plastic carrier bag according to the invention is advantageously free-standing with an open opening cross-section, so that it can be filled with both hands.In a preferred embodiment, these advantageous properties are achieved in particular by the fact that the first and second side walls each have a side fold, in particular one facing inward. These side folds preferably begin at the opening end of the plastic carrier bag. The side folds preferably extend to the transition, particularly preferably to the bottom fold.

[0008] In a preferred embodiment of the plastic carrier bag according to the invention, it is provided that the first and the second side edge of the first side wall approach each other in the tapered / bottom surface area, in particular continuously, and converge in particular in the region of the transition, preferably the bottom fold, and that the first and the second side edge of the second side wall approach each other in the tapered / bottom surface area, in particular continuously, and converge in particular in the region of the transition, preferably the bottom fold.

[0009] In the section that is not the tapered / bottom surface area, in expedient embodiments, the first side wall is welded to the front wall in the region of its first side edge, in particular along its first side edge, and to the rear wall in the region of the second side edge, in particular along its first side edge. Furthermore, it can be provided that in the section that is not the tapered / bottom surface area, the second side wall is welded to the front wall in the region of its first side edge, in particular along its second side edge, and to the rear wall in the region of the second side edge, in particular along its second side edge.

[0010] A particularly expedient embodiment of the plastic carrier bag according to the invention is also achieved in that adjacent to or in the region of the first end of the transition, in particular the bottom fold, the first side wall, the front wall and the back wall are welded together in a first area, preferably with the omission of a section for the passage of air in the region of the transition, in particular in the area in which the extension of the weld of the first side wall, front wall and back wall opens into the transition, and / or, in particular and, that adjacent to or in the region of the second end of the transition, in particular the bottom fold, the second side wall, the front wall and the back wall are welded together in a second area, preferably with the omission of a section for the passage of air in the region of the transition, in particular in the area in which the extension of the weld of the second side wall,Front wall and rear wall flow into the transition.,

[0011] This omission effectively prevents the bag base from being difficult to detach from a flat surface, such as a transport box as used in e-commerce, due to a vacuum effect, without reducing the robustness of the reusable plastic carrier bag.

[0012] In this case, it can be provided that in the first area and in the second area, five, six, seven or eight layers, in particular six or eight layers, are welded together. Embodiments have also proven particularly advantageous in which the front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge, facing the opening end, to the first end of the transition, in particular the bottom fold, and / or, in particular and, in which the front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge, facing the opening end, to the second end of the transition, in particular the bottom fold, and in which the rear wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge, facing the opening end, to the first end of the transition, in particular the bottom fold, and / or, in particular and,in which the rear wall tapers in a straight line from the beginning of the tapered / bottom area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold.

[0013] Alternatively, it can be provided that the front wall tapers in a concave shape from the start of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the front wall tapers in a concave shape from the start of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold, and that the rear wall tapers in a concave shape from the start of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a concave shape from the start of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold.

[0014] According to a further alternative embodiment, it can be provided that the front wall tapers convexly from the start of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the front wall tapers convexly from the start of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold, and that the rear wall tapers convexly from the start of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the rear wall tapers convexly from the start of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold.

[0015] In a further alternative embodiment, it can also be provided that the front wall tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end of the transition, in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the front wall tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end of the transition, in particular the bottom fold,adjoining section tapers less sharply or no longer and that the rear wall tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end of the transition, in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the rear wall tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end of the transition, in particular the bottom fold.

[0016] For example, it is also possible that the taper takes on an irregular course until the turn.

[0017] The first and second side panels are conveniently based on separate material cuts. These material cuts can be individually adapted to the size and shape of the front and back panels or to the design of the bag's base body, which consists of the front and back panels.

[0018] Very practical embodiments of the plastic carrier bags according to the invention also provide in particular that the extension from the first to the second side edge of the first side wall essentially corresponds, in particular corresponds, to the sum of the extension of the tapered / bottom surface area of ​​the front wall, calculated from the transition, in particular the bottom fold, and the extension of the tapered / bottom surface area of ​​the rear wall, calculated from the transition, in particular the bottom fold.

[0019] Alternatively and in particular additionally, it can be provided that the extension from the first to the second side edge of the second side wall substantially corresponds, in particular corresponds, to the sum of the extension of the tapered / bottom surface area of ​​the front wall, calculated from the transition, in particular the bottom fold, and the extension of the tapered / bottom surface area of ​​the rear wall, calculated from the transition, in particular the bottom fold.

[0020] In a very practical embodiment of the plastic carrier bag according to the invention, it can be provided that when the front and rear walls are adjacent to one another up to the transition, in particular the bottom fold (also called "stackable storage state"), the tapers of the front and rear walls are essentially congruent, in particular congruent.

[0021] In yet another, likewise very expedient embodiment of the plastic carrier bag according to the invention, it can be provided that the first and the second side wall in the tapered / bottom area are triangular, semicircular, rectangular or square, in particular triangular.

[0022] Furthermore, embodiments of the plastic carrier bags according to the invention are also conceivable in which the extension from the first to the second side edge of the first side wall and / or, in particular and, the extension from the first to the second side edge of the second side wall is greater than the extension from the first to the second side edge of the front wall and / or, in particular and, the extension from the first to the second side edge of the rear wall. In a preferred embodiment, the extension from the first to the second side edge of the first side wall and / or, in particular and, the extension from the first to the second side edge of the second side wall corresponds at most to the extension from the first to the second side edge of the front wall and / or, in particular and, the extension from the first to the second side edge of the rear wall.Most preferably, the extension from the first to the second side edge of the first side wall and / or, in particular and, the extension from the first to the second side edge of the second side wall corresponds to the extension from the first to the second side edge of the front wall and / or, in particular and, the extension from the first to the second side edge of the rear wall.

[0023] In a particularly preferred embodiment of the plastic carrier bags according to the invention, it can be provided that the front and rear walls in the region of the opening end have a reinforcement region, in particular extending to the opening end or encompassing this, containing at least one single-layer or in particular multi-layer, preferably double-layer, plastic film strip fastened to the front wall on the inside or outside, in particular on the inside, and at least one single-layer or in particular multi-layer, preferably double-layer, plastic film strip fastened to the rear wall on the inside or outside, in particular on the inside, and each extending from or spaced from the first side edge in the direction of or up to the second side edge.In a preferred embodiment, the single- or multi-layer plastic film strip of the reinforcement region of the front wall is fastened from or at a distance from the first side edge in the direction of or up to the second side edge by means of a first weld located below the opening edge, in particular in the form of a first continuous longitudinal weld. Alternatively, and in particular additionally, it can be provided that the single- or multi-layer plastic film strip of the reinforcement region of the rear wall is fastened from or at a distance from the first side edge in the direction of or up to the second side edge by means of a second weld located below the opening edge, in particular in the form of a second continuous longitudinal weld.

[0024] Particularly pronounced ease of handling is also achieved with those embodiments of plastic carrier bags according to the invention in which the opening edge of the first side wall and the opening edge of the second side wall are each at the level of and preferably below the first and second welds, in particular the first and second continuous longitudinal welds. With the above embodiment, the filling of even empty, even large-format plastic carrier bags according to the invention is particularly unproblematic. It has been shown that in this way the holding loops connected to the upper regions, in particular the reinforcement regions, of the front and rear walls contribute to this upper region being able to be folded outwards, thereby reliably ensuring a large opening cross-section.

[0025] Particularly expedient embodiments of the plastic carrier bags according to the invention are characterized in that the front wall and the rear wall are designed in multiple layers, in particular double layers, comprising at least one inner layer, in particular an inner layer, and an outer layer, wherein the at least one inner layer, in particular the inner layer, of the front wall and the at least one inner layer, in particular the inner layer, of the rear wall are designed to be continuous, in particular in one piece, and wherein the outer layers of the front and rear walls are designed to be continuous, in particular in one piece.

[0026] The plastic carrier bag according to the invention described above is also characterized in particular in that the at least one inner layer, in particular the inner layer, of the front wall and the at least one inner layer, in particular the inner layer, of the rear wall are formed in one piece, that the outer layers of the front and rear walls are formed in one piece and that the front wall and the rear wall merge into one another at the bottom end by means of folding over, in particular forming a bottom fold in this transition.

[0027] Surprisingly, it has been found that the plastic carrier bags according to the invention have a pronounced mechanical stability and stability even when the first and second side walls are designed as a single layer. It is of course also possible to design the first and second side walls as multiple layers, in particular as double layers. This can further increase the stability. However, even with single-layer first and second side walls, a further increase in stability and in particular increased stability is often associated with the fact that they have a seam at the opening end. This seam can, for example, comprise or represent a reinforcement area, which can be achieved in particular with the aid of a continuation section adjoining the side wall. For many applications, it has proven sufficient for this continuation section to be simple, ieforming only one layer, is folded over onto the inside or outside, in particular the inside. The seam can also be formed by a separate plastic material strip. The continuation section and the plastic material strip are preferably joined by welding to the inside or outside of the first and second side walls.

[0028] A particularly high degree of resilience, even with repeated use, is achieved in that the holding loop connected to the front wall and the holding loop connected to the rear wall is welded in its first and second connection areas to the single-layer or, in particular, multi-layer plastic film strip of the reinforcement area and also to the front wall or the rear wall, in particular to the at least one inner layer, in particular the inner layer, and the outer layer of the front wall or rear wall.

[0029] Such plastic carrier bags according to the invention solve the problem underlying the invention particularly reliably, in which the single-layer or in particular multi-layer plastic film strip of the reinforcement area of ​​the front wall is fastened over all its layers to the inner layer from or at a distance from the first side edge in the direction of or up to the second side edge by means of the first weld, in particular in the form of the first continuous longitudinal weld, to form a first connecting area, in particular a first connecting strip, and / or, in particular and, in which the single-layer or in particular multi-layer plastic film strip of the reinforcement area of ​​the rear wall is fastened over all its layers to the inner layer from or at a distance from the first side edge in the direction of or up to the second side edge by means of the second weld, in particular in the form of the second continuous longitudinal weld,is fastened to form a second connecting region, in particular a second connecting strip; wherein the first and second connection regions of the retaining loop connected to the front wall and the first and second connection regions of the retaining loop connected to the rear wall are present on the inside of the front and rear walls in the region of the single- or multi-layer plastic film strip of the reinforcement region; wherein a continuation section adjoins the outer layer of the front and rear walls; wherein the continuation section of the front and rear walls forms or comprises the plastic film strip of the reinforcement region; wherein the continuation section of the front and rear walls each extends at least partially along the inner layer and bears against it; wherein the outer layer of the front and rear walls, in particular in the transition to the continuation section,comprises or forms the opening edge; wherein the at least one inner layer, in particular the inner layer, extends with its upper edge up to the opening edge or at a distance therefrom; wherein the outer layer and the continuation section of the front wall and the outer layer and the continuation section of the rear wall are each formed in one piece; wherein the first connecting region, in particular first connecting strips, is spaced closer to the lower edge of the reinforcement region of the front wall than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region; wherein the second connecting region, in particular second connecting strips, is spaced closer to the lower edge of the reinforcement region of the rear wall than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region; wherein the outer layer of the front wall is connected to the outer side of the at least one inner layer,in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, to form a third connecting region, in particular a third connecting strip; wherein the outer layer of the rear wall is welded to the outer side of the at least one inner layer, in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, to form a fourth connecting region, in particular a fourth connecting strip; wherein these third and fourth connecting regions, in particular third and fourth connecting strips, are each closer to the lower edge of the reinforcement region than to its upper edge,in particular at or adjacent to the lower edge of the reinforcement region; wherein the first and second connection regions of the retaining loops connected to the front wall and / or, in particular, to the rear wall, obtained by welding, are spaced from the first, second, third, and fourth connection regions, in particular the first, second, third, and fourth connection strips, and in particular do not overlap with the first, second, third, and fourth connection regions; and wherein the retaining loop connected to the front wall and / or the rear wall on the inside is welded in its first and second connection regions, directly or indirectly, to the single-layer or, in particular, multi-layer plastic film strip of the reinforcement region and to the at least one inner layer, in particular the inner layer and the outer layer.

[0030] Particularly preferably, the first and third connecting regions each overlap with the second and fourth connecting regions, in particular forming uniform connecting regions.

[0031] In the above-mentioned embodiment of a plastic carrier bag according to the invention, the continuation section present on the inner layer is preferably designed to be at least double-layered, in particular double-layered, at least in some regions by means of folding over.

[0032] Particularly suitable plastic carrier bags according to the invention are also characterized in that the opening edge of the first side wall and the opening edge of the second side wall, with respect to the opening end, are each at the level of, and in particular below, the first, second, third, and fourth connecting regions. In this way, the bag opening can particularly reliably ensure a very large opening cross-section even when empty, in that the bag sections located above the connecting regions, where the holding loops are also located, can be easily folded outward.

[0033] Particularly preferred plastic carrier bags according to the invention are also characterized in that the holding loop connected to the front wall and the holding loop connected to the rear wall is welded in its first and second connection areas to the single-layer or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area and also to the at least one inner layer, in particular the inner layer, and the outer layer, and wherein the single-layer or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area of ​​the front wall is fastened to the inner or outer layer from or at a distance from the first side edge in the direction of or up to the second side edge by means of welding, and wherein the single-layer or multi-layer, in particular multi-layer,Plastic film strip of the reinforcement area of ​​the rear wall is fastened to the inner or outer layer from or at a distance from the first side edge in the direction of or up to the second side edge by means of welding, wherein the first and second connection areas of the retaining loop connected to the front wall and the first and second connection areas of the retaining loop connected to the rear wall are present on the inside of the front or rear wall in the area of ​​the single- or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area, wherein a continuation section adjoins the outer layer in each case, wherein the continuation section forms the plastic film strip of the reinforcement area, wherein the continuation section extends at least in sections along the inside of the at least one inner layer, in particular the inner layer, and rests against it,wherein this continuation section is welded along an extension from or at a distance from the first side edge in the direction of or up to the second side edge to the inside of the at least one inner layer, in particular the inner layer, in particular with a continuous longitudinal weld, and wherein the outer layer of the front and rear wall, in particular in the transition to the continuation section, comprises or forms the opening edge, and wherein the at least one inner layer, in particular the inner layer, extends with its upper edge up to the opening edge or at a distance therefrom, wherein the outer layer and the continuation section of the front wall and the outer layer and the continuation section of the rear wall are each formed in one piece and wherein the single- or multi-layer, in particular double-layer,Plastic film strips of the reinforcement area of ​​the front and rear walls are welded over all of their layers to the inside of the at least one inner layer, in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, to form a first connecting area, in particular a connecting strip, wherein this first connecting area, in particular a connecting strip, is spaced closer to the lower edge of the reinforcement area than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement area, wherein the outer layer of the front and rear walls is welded to the outside of the at least one inner layer, in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge,in particular with a continuous longitudinal weld, forming a second connecting region, in particular a second connecting strip, wherein this second connecting region, in particular second connecting strips, is each closer spaced from the lower edge of the reinforcement region than from its upper edge, in particular at or adjacent to the lower edge of the reinforcement region, wherein the first and second connection regions of the holding loops connected to the front wall and / or to the rear wall, obtained by means of welding, are spaced from the first and second connection regions, in particular the first and second connecting strips, and in particular do not overlap with the first and second connection regions, wherein the holding loop connected to the front wall and / or the rear wall on the inside is each in its first and second connection regions, directly or indirectly,is welded to the single- or multi-layer, in particular multi-layer, plastic film strip of the reinforcement region and to the at least one inner layer, in particular the inner layer, and the outer layer. In the previously specified embodiment, the continuation section present on the inside of the at least one inner layer, in particular the inner layer, is designed to be at least partially double-layered by means of folding.

[0034] The above-described embodiment of a plastic carrier bag according to the invention provides a particularly pronounced reinforcement, particularly in the upper edge area, which withstands strong mechanical loads and provides a very effective basis for attaching straps. Furthermore, the plastic carrier bag provided with such a reinforced area is convenient and easy to open.

[0035] The plastic carrier bags according to the invention are preferably made of thermoplastics, with polyolefinic thermoplastics, especially polyethylene, being preferred. In these cases, the connection by welding usually represents a thermoplastic weld. Accordingly, the plastic carrier bags according to the invention are particularly preferably made entirely of thermoplastics, especially polyolefinic thermoplastics such as polyethylene. This results in single-variety plastic bags that are particularly sustainably recyclable.

[0036] The outer layer of the front and back walls of the plastic carrier bag according to the invention usually represents a single layer. If there is another layer on the inside and adjacent to the outer layer, this is to be counted as an inside layer or represents the inner layer. If the continuation section is integral with the outer layer, this continuation section must also necessarily be a single layer. The single layer nature of the outer layer of the front and back walls does not preclude the outer layer from being multi-layered and, for example, from being present as a coextruded film. A single-layer outer layer can also have a laminated layer on the inside and / or outside without losing the character of the single layer. In multi-layer systems, the layers are accordingly closely bonded. The outer layer and the inner layer orAccordingly, in a preferred embodiment, the majority of the inner layers are connected to one another only by welding along their side edges. Alternatively, it can also be provided that the outer layer and the inner layer or the majority of the inner layers are partially connected to one another, e.g., via isolated welding or adhesive points, in particular welding points.

[0037] In a preferred embodiment of the plastic carrier bag specified above, it can be provided that the holding loop connected to the front wall via its first and second connection areas and the holding loop connected to the rear wall via its first and second connection areas in the area from the respective first to the second connection area at least in sections has a first flexible, in particular tubular, hollow body and / or a single- or multi-layer material strip, in particular plastic material strip, which does not form a hollow body and which is at least in sections, in particular substantially completely, enveloped by a second flexible, in particular tubular, hollow body.

[0038] With regard to the holding loops of the plastic carrier bags according to the invention, preference is given to those in which the first flexible, in particular tubular, hollow body is formed from a first flexible plastic material strip with opposite first and second longitudinal side edges, the opposite first and second longitudinal side edges of which are welded and / or glued to one another in an overlapping region and / or, preferably and, in which the second flexible, in particular tubular, hollow body is formed from a second flexible plastic material strip with opposite first and second longitudinal side edges, the opposite first and second longitudinal side edges of which are welded and / or glued to one another in a second overlapping region.

[0039] A particularly high degree of strength is achieved in particular by the fact that the first plastic material strip of the first flexible, in particular tubular, hollow body and the second plastic material strip of the second flexible, in particular tubular, hollow body are welded to one another at least in sections, in particular along the first and second overlapping regions.

[0040] In a preferred embodiment, the first and second flexible plastic material strips, for example in the form of polyolefin film strips, in particular polyethylene film strips, can have a rectangular shape when spread out flat. The longitudinal edges of these material strips can then be moved toward each other to form the first and second, in particular tubular, hollow bodies and connected to each other in the overlapping region. The first longitudinal side edge can rest against the second longitudinal side edge both above and below the latter in an overlapping region.

[0041] It has often proven expedient to weld the first and second plastic material strips in the first and / or second overlapping region in a single process step, i.e. essentially simultaneously. This creates a uniform weld seam extending along the holding loop, in particular a tubular one. This embodiment has the further advantage that the first and the second flexible hollow body are connected to one another in the region of this uniform weld seam, which results in further increased mechanical strength. Alternatively, the first and the second hollow body, in particular a tubular one, can also be connected to one another in regions or continuously along their entire length, in particular along a connecting strip, without the first and second overlapping regions themselves overlapping in this connection region.

[0042] A further advantageous embodiment, in particular of the preceding embodiments, provides that in the first and / or second connection area of ​​the first and / or second retaining loop, in particular the flat-pressed first and / or second retaining loop, the connection side is that side of the retaining loop, in particular the flat-pressed first and second, which does not have the overlapping areas of the opposite first and second longitudinal side edges of the first and second flexible plastic material strips of the first and second flexible hollow bodies. It has surprisingly been found that particularly good mechanical stability and tear resistance are achieved in this way.

[0043] Furthermore, within the meaning of the invention, it can be provided that the outer layer of the front and / or rear wall is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent and which is printable or printed on the inside, at least partially, in particular by means of a counterprinting process. Furthermore, the plastic carrier bag according to the invention alternatively or additionally comprises at least one inner layer, in particular the inner layer, of the front and / or rear wall, which is at least partially printable or printed on the outside, and wherein the outer layer is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent.

[0044] A particularly high degree of stability and tear resistance is also achieved by using a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film, and especially a non-foamed low-density polyethylene film, for an outer layer of a plastic carrier bag according to the invention in the aforementioned embodiments. The combination of a foamed plastic inner layer and a non-foamed plastic outer layer surprisingly leads to particularly mechanically resilient and permanently stable plastic carrier bags.The same applies to those preferred embodiments of the holding loop in which the second flexible, in particular tubular, hollow body, in particular the second flexible plastic material strip, is based on or formed from a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and in particular a non-foamed LD polyethylene film.

[0045] Accordingly, in a very expedient embodiment, it can be provided that the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and the at least one inner layer, in particular the inner layer, of the front and rear walls, the first and the second side walls and optionally the holding loops connected to the front wall and the rear wall, in particular their first and / or second flexible plastic material strips or their single- or multi-layer material strips not forming a hollow body, are formed or consist of polyethylene, in particular LD polyethylene, wherein the at least one inner layer, in particular the inner layer, of the front and rear walls represents a foamed polyethylene film, in particular a foamed LD polyethylene film, and wherein the outer layer of the front and / or rear walls,and optionally the single- or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area is a non-foamed polyethylene film, in particular a non-foamed low density polyethylene film. In this context, plastic carrier bags are particularly preferred in which the first flexible, in particular tubular, hollow body or the single- or multi-layer material strip of the holding loop of the front and / or rear wall, which does not form a hollow body, in particular the first flexible plastic material strip, is formed or consists of foamed polymer material, preferably foamed polyethylene, and particularly preferably foamed low density polyethylene, and wherein preferably the second flexible, in particular tubular, hollow body of the holding loop of the front and / or rear wall, in particular the second flexible plastic material strip, is made of non-foamed polymer material, preferably non-foamed polyethylene,and particularly preferably non-foamed LD polyethylene,

[0046] For the purposes of the present invention, the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and / or the at least one inner layer, in particular the inner layer, of the front and / or rear wall are expediently in film form.

[0047] A particularly high degree of stability and tear resistance is also achieved in the above-mentioned embodiments of a plastic carrier bag according to the invention in that the first and second connection areas of the holding loops connected to the front wall and / or to the rear wall, which are obtained in particular by welding, are spaced apart from the first and / or second connecting strips, in particular do not have an overlap with the first and / or second connecting strips.

[0048] In the plastic carrier bag according to the invention, it is preferably provided that the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner and / or outer layer, and the at least one inner layer, in particular the inner layer, of the front and / or rear wall and optionally the holding loops connected to the front and / or rear wall, in particular their first and / or second flexible plastic material strips and / or the single- or multi-layer material strips not forming a hollow body, are formed or consist of polyolefins, in particular polyethylene. As an alternative to polyethylene, polypropylene can also be used. Copolymers with ethylene or propylene as the main component are also suitable, with propylene or propylene being used for the further comonomers, for example.Ethylene and / or butene, for example 1-butene, or butadiene can be used.

[0049] It is particularly preferably provided that the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the outer layer, and the at least one inner layer, in particular the inner layer, of the front and rear walls as well as the holding loops connected to the front wall and to the rear wall, in particular their first and / or second flexible plastic material strips and / or the single- or multi-layer material strips not forming a hollow body, as well as the first and second side walls are formed or consist of polyolefins, preferably polyethylene, particularly preferably HD or LD polyethylene, in particular LD polyethylene.

[0050] Preferably, a uniform plastic material, such as polypropylene or polyethylene, preferably polyethylene, and particularly preferably low-density polyethylene, is used for all components of the plastic carrier bag according to the invention, for example, for the inner and outer layers of the front and rear walls, for the holding loops of the front and rear walls, and for the first and second side walls. This results in a single-material plastic carrier bag that can be easily recycled.

[0051] Furthermore, among the plastic carrier bags according to the invention, those are particularly suitable in which the at least one inner layer, in particular the inner layer, of the front and / or, in particular, rear wall comprises or represents a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed LD polyethylene film. This can reinforce a textile-like appearance when handling the plastic carrier bag according to the invention, for example when folding it. Similarly, the first flexible, in particular tubular, hollow body or the single- or multi-layer material strip not forming a hollow body can also comprise or consist of a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed LD polyethylene film.

[0052] LD polyethylene is particularly preferred among polyethylenes.

[0053] In a preferred embodiment of the plastic carrier bag according to the invention, it can be provided that the holding loop connected to the front wall and / or to the rear wall, in particular on the inside, is welded in its first and second connection areas, directly or indirectly, to the single-layer or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area, and to the at least one inner layer, in particular the inner layer, and the outer layer, wherein in these first and second connection areas at least the inside of the second hollow body of the holding loop, in particular the inwardly facing side of the second flexible plastic material strip, is welded to the outside of the first hollow body or the facing side of the single-layer or multi-layer material strip not forming a hollow body, in particular the outwardly facing side of the first flexible plastic material strip.

[0054] If the first and second connection areas of the holding loop lie directly against the plastic film strip of the reinforcement area, the connection to the at least one inner layer, in particular the inner layer, and the outer layer usually takes place indirectly, i.e. via the respectively adjacent adjacent layer. In a corresponding manner, if the first and second connection areas of the holding loop lie directly against the outer or inner layer, the connection to the at least one inner layer, in particular the inner layer, or the outer layer, as well as the layer(s) of the plastic film strip of the reinforcement area can usually take place indirectly, i.e. via the respectively adjacent adjacent layer. In some embodiments, for example, the molten material of the layers involved can mix during welding, so that it is no longer possible to clearly assign the material to the layers.

[0055] In particular, to create a pleasant feel similar to that of textile holding loops, it has proven advantageous for the first flexible, in particular tubular, hollow body, in particular the first flexible plastic material strip, or the single- or multi-layer material strip not forming a hollow body and / or the second flexible, in particular tubular, hollow body, in particular the second flexible plastic material strip, of the holding loop of the front and / or rear wall to have an embossed pattern at least in sections, in particular over its entire surface. Such embossed patterns can be reliably and permanently produced, for example, when using thermoplastics, such as polyolefins, through the application of heat and pressure.

[0056] For many embodiments of the plastic carrier bags according to the invention, it has proven pragmatic to form the opening edge by a fold at the upper end of the outer layer or in the transition area from the outer layer to the continuation section.

[0057] A connection or welding of the plastic film strip or the continuation section of the front and / or rear wall to the at least one inner layer, in particular the inner layer, for example, the inner side of the inner layer, preferably involves the connection of all adjacent layers. The same generally applies to the connection of the plastic film strip or the continuation section of the front and / or rear wall to the outer layer.

[0058] The plastic carrier bag according to the invention, in particular the single-layer plastic carrier bag according to the invention, can be designed in such a way that the outer layer, the single-layer or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and / or the at least one inner layer, in particular the inner layer, of the front and / or rear wall, the first and the second side wall and the holding loops connected to the front wall and / or the rear wall, in particular their first and / or second flexible plastic material strips or the multi-layer material strip not forming a hollow body, contain or consist of recycled plastic material, in particular recycled polyolefins, for example polyethylene.

[0059] Furthermore, the invention also encompasses such plastic carrier bags with a bottom end and an opposite opening end, comprising a front wall and a rear wall, each with a first side edge and an opposite second side edge and an opening edge, as well as a first and an opposite second side wall, each with a first and an opposite second side edge and an opening edge, wherein the first and the second side wall are designed as single- or multi-layered, in particular single-layered, and at least one holding loop connected to the front wall and / or, in particular and, at least one holding loop connected to the rear wall, each with a first and a second connection region; wherein the front and the rear wall are designed as single- or in particular multi-layered, preferably double-layered, wherein the front wall and the rear wall are designed as continuous, in particular as one piece;wherein the front wall and the rear wall merge into one another at the bottom end by means of folding over, in particular forming a bottom fold in this transition; wherein the transition, in particular the bottom fold, extends laterally from a first to an opposite second end; wherein the lateral extent of the transition, in particular of the bottom fold, between the first and second ends is substantially identical, in particular identical, to the extent of the front and rear walls between the respective first and second side edges at the opening end; wherein the first and second side walls have a square, rectangular or trapezoidal cut; wherein the front wall and the rear wall are welded to the first side wall in the region of their first side edges;and wherein the front wall and the rear wall are welded to the second side wall in the region of their second side edges, in particular to form a square or rectangular base surface in the erected, filled state; and wherein the opening edge of the first side wall and the opening edge of the second side wall, with respect to the opening end, are each located below the opening edges of the front wall and rear wall, in particular below the first and second connection areas of the holding loops of the front wall and / or, in particular, the rear wall.

[0060] Furthermore, the invention also encompasses such plastic carrier bags with a bottom end and an opposite opening end, comprising a front wall and a back wall, each with a first side edge and an opposite second side edge, an opening edge and a bottom edge opposite the opening edge, a first and an opposite second side wall, each with a first and an opposite second side edge and an opening edge, wherein the first and the second side wall are designed as single- or multi-layered, in particular single-layered, and a bag bottom with a first side edge and an opposite second side edge and at least one holding loop connected to the front wall and / or, in particular and, at least one holding loop connected to the back wall, each with a first and a second connection region; wherein the front and the back wall are designed as single- or in particular multi-layered, preferably double-layered;wherein the first side wall, the bag bottom, and the second side wall are continuous, in particular integral,; wherein the first side wall is welded to the front wall in the region of its first side edge, in particular along its first side edge, and to the rear wall in the region of the second side edge, in particular along its first side edge; wherein the second side wall is welded to the front wall in the region of its first side edge, in particular along its second side edge, and to the rear wall in the region of the second side edge, in particular along its second side edge; wherein the bag bottom is welded to the front wall in the region of the first side edge, in particular along its bottom edge, and to the rear wall in the region of the second side edge, in particular along its bottom edge;and wherein the opening edge of the first side wall and the opening edge of the second side wall, with respect to the opening end, are each located below the opening edges of the front wall and rear wall, in particular below the first and second connection regions of the holding loops of the front wall and / or, in particular, rear wall.;

[0061] The plastic carrier bags according to the invention are accompanied by the surprising discovery that they are not only suitable for repeated use, even when carrying heavy loads, but are also particularly user-friendly. This applies in particular to those embodiments in which the opening edges of the first and second side walls are each located below the opening edges of the front and rear walls. Embodiments in which the opening edges of the first and second side walls are each located below the first and second connection areas of the holding loops of the front and rear walls have proven particularly suitable.A particularly high degree of user-friendliness is also achieved by the fact that the opening edge of the first side wall and the opening edge of the second side wall are each located below the first and second welds, in particular the first and second continuous longitudinal welds, and in particular also below the first, second, third and fourth connecting areas. This is particularly true when the holding loops of the front and rear walls are attached on the inside, preferably in the area of ​​the reinforcement section. By folding the holding loops outwards, including the sections of the front and rear walls located above the opening edges of the first and second side walls, not only is unobstructed access to the bag volume to be filled, but this also further stabilizes the opened, empty plastic carrier bag.There is no longer any risk that slight movement, for example of the shopping cart in which the plastic carrier bag is located, will cause the walls of the bag to collapse, making it impossible to fill with both hands. Finally, the plastic carrier bags according to the invention have proven particularly practical, particularly in the area of ​​e-commerce, where the plastic carrier bags are pre-filled by the supplier upon order and picked up by the end customer. In this case, the plastic carrier bags according to the invention can also be temporarily stored in the transport boxes commonly used to protect the contents from mechanical influences. Removing the bags from these transport boxes is particularly unproblematic; sticking can be prevented, for example, by providing cutouts in the base area.

[0062] Further features and advantages of the invention will become apparent from the following description, in which preferred embodiments of the invention are explained by way of example with reference to schematic drawings. In the drawings: Figure 1 is a schematic front view of an embodiment of a plastic carrier bag according to the invention; Figure 2 is a schematic perspective view of the plastic carrier bag according to the invention according to Figure 1 ; and Figure 3 shows a schematic cross-sectional view of a section of the upper region of the plastic carrier bag according to the invention according to Figure 1 .

[0063] Figure 1 shows a schematic front view of a plastic carrier bag (1) according to the invention. In the illustrated embodiment, the double-layered front wall (6) at the bottom end (2) is folded over into the double-layered rear wall (8) (not shown; see Figure 3) forming a bottom fold (16) in the transition. This means that the inner layers (28, 32) (not shown; see Figure 3 ) of the front and rear walls (6, 8) are formed in one piece, and also the outer layers (30, 34) (not shown; see Figure 3) of the front and rear walls (6, 8) are also formed in one piece. The transition (16) in the form of the bottom fold extends laterally from a first end (110) to an opposite second end (112). The lateral extent of the bottom fold (16) between the first and second ends (110, 112) is less than the extent of the front and rear walls between the respective first and second side edges (10, 12, 10', 12') at the opening end (4). Accordingly, in the illustrated embodiment, the extent of the front and rear walls (6, 8) between the respective first and second side edges (10, 12, 10', 12') tapers in the region (114) of the lower quarter, relative to the extent between the opening end (4) and the bottom end (2), up to the bottom fold (16) ("tapering / bottom area region"). The lateral extent of the first and second side walls (102, 104) (not shown; see Figure 2) in the tapered / bottom surface area (114) decreases correspondingly to the area in which the extension of the front and rear walls (6, 8) between the respective first and second side edges (10, 12, 10', 12`) decreases accordingly. The front and rear walls (6, 8) are connected to the first and second side walls (102, 104) by means of weld seams (120, 120', 122, 122') running in the area of ​​the first and second side edges (10, 10', 12, 12`) (not shown). The front and rear walls (6, 8) have, in the region of the opening end (4), a reinforcement region (44, 46) extending to the opening end, each containing a double-layered plastic film strip (106, 108) attached to the inside of the front wall (6) or to the inside of the rear wall (8) and extending from the first side edge (10) to the second side edge (12) (not shown; see Figure 3). This double-layered plastic film strip (106, 108) can be a separate component, but preferably represents an integral, i.e. one-piece, part of the outer layer and is accordingly formed from a continuation section of the outer layer of the front or rear wall. This continuation section initially forms the opening edge (14, 14') by folding over. By folding over again, in particular towards the inside of the inner wall, the resulting double layer provides special reinforcement in the upper region of the carrier bag. In the embodiment shown, this continuation section is welded along a connecting region in the form of a connecting strip (55, 55') to the inner layer (28) and, via this, also to the outer layer (30). The same applies to the rear wall (8) (not shown).The front wall (6) and the rear wall (8) are each connected to the bag body by a retaining loop (20, 22) via their first and second connection areas (24A, 24B; 26A, 26B). The first and second connection areas (24A, 24B; 26A, 26B) of the retaining loops (20, 22) for the front and rear walls are located entirely within the respective reinforcement areas (44, 46) and do not overlap with the connecting strips (55, 55').

[0064] Out of Figure 2 a schematic perspective view of the plastic carrier bag (1) according to the invention according to Fig. 1in the erected filling state. In this erected state, the base surface is formed by parts of the front and rear walls (6, 8) and by triangular regions (124, 126) of the first and second side walls (102, 104). In the illustrated embodiment, the first side wall (102) is welded in the tapered / base surface region (114, 114') in the region of its first side edge (116) to the front wall (6) along its first side edge (10) and in the region of the second side edge (118) to the rear wall (8) along its first side edge (10'). Furthermore, the second side wall (104) is welded in the tapered / bottom surface area (114, 114') in the area of ​​its first side edge (116') to the front wall (6) along its second side edge (12) and in the area of ​​the second side edge (118') to the rear wall (8) along its second side edge (12').In the embodiment shown, the opening edge (15) of the first side wall (102) and the opening edge (15') of the second side wall (104) are located, with respect to the opening end (4), both below the opening edges (14, 14') of the front wall (6) and rear wall (8) and below the first and second connection areas (24A, 24B; 26A, 26B) of the holding loops (20, 22) of the front wall (6) and rear wall (8) as well as below the connection areas in the form of connection strips (55, 55').

[0065] Figure 3 shows the upper area of ​​the plastic carrier bag (1) according to the invention according to Figure 1The extension sections (36, 38) are folded over the inner layers (28, 32) and also folded inwards again, thus forming a double layer. These double-layered extension sections (36, 38) are welded to one another and also to the inside of the inner layer (28, 32) to form the connecting regions (52, 52'). Furthermore, the inner layer (28, 32) is also welded to the respective outer layer (30, 34) to form the connecting regions (54, 54'). In the embodiment shown, the connecting regions (52, 52') and (54, 54') each overlap and form a uniform connecting strip (55, 55'), which can in particular also be obtained in a single welding step.The partially illustrated holding loops (20, 22) are welded to the inside of the folded, double-layered extension sections (36, 38) in the illustrated first connection areas (24A, 26A). Furthermore, the outer layer (30, 34), the inner layer (28, 32), and the folded extension section (36, 38) are each welded to one another in these connection areas (24A, 26A). This results in a very stable, mechanically strong plastic carrier bag (1). Furthermore, the illustrated internal attachment of the holding loops ensures uncomplicated filling of the plastic carrier bags according to the invention. The carrying loops prevent the upper ends or opening edges from serving as abutting edges when filling with piece goods.

[0066] The features of the invention disclosed in the above description, in the claims and in the drawings may be essential for the realization of the invention in its various embodiments, both individually and in any combination.

Claims

1. A plastic carrier bag (1) with a bottom end (2) and an opposite opening end (4), comprising a front wall (6) and a rear wall (8), each with a first side edge (10, 10') and an opposite second side edge (12, 12') and an opening edge (14, 14'), as well as a first (102) and an opposite second side wall (104), each with a first and an opposite second side edge (116, 118) and an opening edge (15, 15'), wherein the first and the second side wall (102, 104) are designed in one or more layers, and at least one holding loop (20, 22) connected to the front wall (6) and / or, in particular, at least one holding loop (20, 22) connected to the rear wall (8), each with a first and a second connection region (24A, 24B; 26A, 26B), wherein the The front and rear walls (6, 8) are designed in one or more layers, preferably in two layers, wherein the front and rear walls (6, 8) are continuous,in particular in one piece, and merge into one another at the bottom end (2) by folding over, in particular forming a bottom fold in this transition (16), wherein the transition (16), in particular the bottom fold, extends laterally from a first end (110) to an opposite second end (112), wherein when the front and rear walls are in contact with one another up to the transition (16), in particular the bottom fold (also called a "stackable storage state"), the lateral extent of the transition (16), in particular the bottom fold, between the first and second ends (110, 112) is smaller than the extent of the front and rear walls between the respective first and second side edges (10, 12, 10', 12') at the opening end (4), wherein the extent of the front and rear walls (6, 8) between the respective first and second side edges (10, 12, 10', 12') in the region (114) of the lower third, especially the lower quarter,relative to the extension between the opening end (4) and the bottom end (2), in the direction of and in particular up to the transition (16), in particular to the bottom fold, tapered (also called "tapering / bottom area region"), wherein the lateral extension of the first and second side walls (102, 104) in the tapering / bottom area region (114) corresponding to the area in which the extension of the front and rear walls (6, 8) between the respective first and second side edges (10, 12, 10', 12') tapers, in each case, in particular in a corresponding manner, wherein the first side wall (102) in the tapering / bottom area region (114) in the area of ​​its first side edge (116) is connected to the front wall (6), in particular along its first side edge (10), and in the area of ​​the second side edge (118) is connected to the rear wall (8), in particular along its first side edge (10'),is welded and wherein the second side wall (104) is welded in the tapered / bottom surface area (114) in the area of ​​its first side edge (116) to the front wall (6), in particular along its second side edge (12), and in the area of ​​the second side edge (118) to the rear wall (8), in particular along its second side edge (12'), wherein the opening edge (15) of the first side wall (102) and the opening edge (15') of the second side wall (104), with respect to the opening end (4), are each located below the opening edges (14, 14') of the front wall (6) and rear wall (8), in particular below the first and second connection areas (24A, 24B; 26A, 26B) of the holding loops (20, 22) of the front wall (6) and / or, in particular, rear wall (8).

2. Plastic carrier bag (1) according to claim 1, characterized in thatthe first and the second side edge of the first side wall (102) approach each other in the tapered / bottom surface area (114), in particular continuously, and in particular substantially converge, in particular converge, in the region of the transition (16), preferably the bottom fold, and that the first and the second side edge of the second side wall (104) approach each other in the tapered / bottom surface area (114), in particular continuously, and in particular converge, in the region of the transition (16), preferably the bottom fold.

3. Plastic carrier bag (1) according to claim 1 or 2, characterized in thatin the section which is not the tapered / bottom surface area (114), the first side wall (102) is welded to the front wall (6) in the region of its first side edge (116), in particular along its first side edge (10), and in the region of the second side edge (118) to the rear wall (8), in particular along its first side edge (10'), and in that in the section which is not the tapered / bottom surface area (114), the second side wall (104) is welded to the front wall (6) in the region of its first side edge (116), in particular along its second side edge (12), and in the region of the second side edge (118) to the rear wall, in particular along its second side edge (12').

4. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe extension from the first to the second side edge of the first side wall substantially corresponds to, in particular corresponds to, the sum of the extension of the tapered / bottom surface area of ​​the front wall, calculated from the transition (16), in particular the bottom fold, and the extension of the tapered / bottom surface area of ​​the rear wall, calculated from the transition (16), in particular the bottom fold, and / or, in particular and, that the extension from the first to the second side edge of the second side wall substantially corresponds to, in particular corresponds to, the sum of the extension of the tapered / bottom surface area of ​​the front wall, calculated from the transition (16), in particular the bottom fold, and the extension of the tapered / bottom surface area of ​​the rear wall, calculated from the transition (16), in particular the bottom fold.

5. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe first and second side walls (102, 104) in the tapered / bottom surface area (114) are triangular, semicircular, rectangular or square, in particular triangular.

6. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatadjacent to or in the region of the first end of the transition (16), in particular the bottom fold, the first side wall (102), the front wall and the rear wall are welded to one another in a first area, preferably with the omission of a section for the passage of air in the region of the transition (6), in particular in the region in which the extension of the weld of the first side wall, front wall and rear wall opens into the transition (6), and / or, in particular and, that adjacent to or in the region of the second end of the transition (16), in particular the bottom fold, the second side wall (104), the front wall and the rear wall are welded to one another in a second area, preferably with the omission of a section for the passage of air in the region of the transition (6), in particular in the region in which the extension of the weld of the second side wall, front wall and rear wall opens into the transition (6).

7. Plastic carrier bag (1) according to claim 6, characterized in that in the first area and in the second area there are five, six, seven or eight layers, in particular six or eight layers welded together.

8. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold, and that the rear wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), especially the bottom fold,tapered in a straight line or that the front wall (6) tapers in a concave manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the front wall tapers in a concave manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold, and that the rear wall (8) tapers in a concave manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a concave manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold,tapers in a concave manner or that the front wall (6) tapers in a convex manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the front wall tapers in a convex manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold, and that the rear wall (8) tapers in a convex manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a convex manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second End (112) of the transition (16), in particular the bottom fold,convexly tapered or that the front wall (6) tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end (110) of the transition (16), in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the front wall (6) tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end (112) of the transition (16), in particular the bottom fold,adjoining section tapers less sharply or no longer and that the rear wall (6) tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end (110) of the transition (16), in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the rear wall (8) tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end (112) of the transition (16), in particular the bottom fold.

9. Plastic carrier bag (1) with a bottom end (2) and an opposite opening end (4), comprising a front wall (6) and a rear wall (8), each with a first side edge (10, 10') and an opposite second side edge (12, 12') and an opening edge (14, 14'), as well as a first (102) and an opposite second side wall (104), each with a first and an opposite second side edge (116, 118) and an opening edge (15, 15'), wherein the first and the second side wall (102, 104) are designed in one or more layers, and at least one holding loop (20, 22) connected to the front wall (6) and / or, in particular, at least one holding loop (20, 22) connected to the rear wall (8), each with a first and a second connection area (24A, 24B; 26A, 26B), wherein the The front and rear walls (6, 8) are designed in one or more layers, preferably in two layers, wherein the front wall (6) and the rear wall (8) are continuous,in particular in one piece, wherein the front wall (6) and the rear wall (8) merge into one another at the bottom end (2) by means of folding over, in particular forming a bottom fold in this transition (16), wherein the transition (16), in particular the bottom fold, extends laterally from a first (110) to an opposite second end (112), wherein the lateral extent of the transition (16), in particular of the bottom fold, between the first and second ends (110, 112) is substantially identical, in particular identical, to the extent of the front and rear walls between the respective first and second side edges (10, 12, 10', 12') at the opening end (4), wherein the first and second side walls have a square, rectangular or trapezoidal cut, wherein the front wall (6) and the rear wall (8) in the region of their first side edges (10,10') are welded to the first side wall (102), and wherein the front wall (6) and the rear wall (8) are welded to the second side wall (104) in the region of their second side edges (12, 12'), in particular to form a square or rectangular base surface in the erected, filled state, wherein the opening edge (15) of the first side wall (102) and the opening edge (15') of the second side wall (104), with respect to the opening end (4), are each located below the opening edges (14, 14') of the front wall (6) and rear wall (8), in particular below the first and second connection areas (24A, 24B; 26A, 26B) of the holding loops (20, 22) of the front wall (6) and / or, in particular, rear wall (8).

10. A plastic carrier bag (1) with a bottom end (2) and an opposite opening end (4), comprising a front wall (6) and a rear wall (8), each with a first side edge (10, 10') and an opposite second side edge (12, 12'), an opening edge (14, 14') and a bottom edge opposite the opening edge, a first (102) and an opposite second side wall (104), each with a first and an opposite second side edge (116, 118) and an opening edge (15, 15'), and a bag bottom with a first side edge and an opposite second side edge, wherein the first and the second side wall (102, 104) are designed in one or more layers, and at least one holding loop (20, 22) connected to the front wall (6) and / or, in particular, at least one holding loop (20, 22) connected to the rear wall (8), each with a first and a second connection area (24A, 24B; 26A, 26B), wherein the front and rear walls (6,8) are designed in one or in particular multi-layered, preferably double-layered, wherein the first side wall, the bag bottom and the second side wall are continuous, in particular in one piece, wherein the first side wall (102) is welded in the region of its first side edge (116) to the front wall (6), in particular along its first side edge (10), and in the region of the second side edge (118) to the rear wall (8), in particular along its first side edge (10'), wherein the second side wall (104) is welded in the region of its first side edge (116) to the front wall (6), in particular along its second side edge (12), and in the region of the second side edge (118) to the rear wall (8), in particular along its second side edge (12'), wherein the bag bottom is welded in the region of the first side edge to the front wall (6), in particular along its bottom edge, and in the region of the second side edge to the rear wall (8),in particular along its bottom edge, and wherein the opening edge (15) of the first side wall (102) and the opening edge (15') of the second side wall (104), with respect to the opening end (4), are each located below the opening edges (14, 14') of the front wall (6) and rear wall (8), in particular below the first and second connection areas (24A, 24B; 26A, 26B) of the holding loops (20, 22) of the front wall (6) and / or, in particular, rear wall (8).

11. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe front and rear walls (6, 8) in the region of the opening end (4) have a reinforcement region (44, 46), in particular extending to or encompassing the opening end, containing at least one single-layer or, in particular, multi-layer, preferably double-layer, plastic film strip (106, 108) fastened to the front wall (6) on the inside or outside, in particular on the inside, and at least one single-layer or, in particular, multi-layer, preferably double-layer, plastic film strip (106, 108) fastened to the rear wall (8) on the inside or outside, in particular on the inside, and each extending from or at a distance from the first side edge (10, 10') in the direction of or to the second side edge (12, 12'), wherein the single-layer or multi-layer plastic film strip (106) of the reinforcement region (44) of the front wall (6) is fastened to the front wall (6) on the inside or outside, in particular on the inside, and each extending from or at a distance from the first side edge (10) in the direction of or to the second side edge (12) by means of a first weld located below the opening edge (14),in particular in the form of a first continuous longitudinal weld, and wherein the single- or multi-layer plastic film strip (108) of the reinforcement region (46) of the rear wall (8) is fastened from or at a distance from the first side edge (10') in the direction of or up to the second side edge (12') by means of a second weld, in particular in the form of a second continuous longitudinal weld, present below the opening edge (14').

12. Plastic carrier bag (1) according to claim 11, characterized in that the opening edge (15) of the first side wall (102) and the opening edge (15') of the second side wall (104) are each at the level of and, with respect to the opening end (4), preferably below the first and second welds, in particular the first and second continuous longitudinal welds.

13. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe front wall and the rear wall (6, 8) are designed in multiple layers, in particular in two layers, comprising at least one inner layer, in particular an inner layer, and an outer layer (28, 30; 32, 34), wherein the at least one inner layer (28), in particular the inner layer, of the front wall (6) and the at least one inner layer (32), in particular the inner layer, of the rear wall (8) are designed to be continuous, in particular in one piece, and wherein the outer layers (30, 34) of the front and rear walls (6, 8) are designed to be continuous, in particular in one piece.

14. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe extension from the first to the second side edge of the first side wall and / or, in particular and, the extension from the first to the second side edge of the second side wall is greater than the extension from the first to the second side edge of the front wall and / or, in particular and, the extension from the first to the second side edge of the rear wall, wherein preferably the extension from the first to the second side edge of the first side wall and / or, in particular and, the extension from the first to the second side edge of the second side wall corresponds at most to the extension from the first to the second side edge of the front wall and / or, in particular and, the extension from the first to the second side edge of the rear wall and in particular to the extension from the first to the second side edge of the front wall and / or, in particular and, the extension from the first to the second side edge of the rear wall.

15. Plastic carrier bag (1) according to one of claims 10 to 14, characterized in that the holding loop (20, 22) connected to the front wall (6) and the holding loop (20, 22) connected to the rear wall (8) is welded in its first and second connection regions (24A, 24B; 26A, 26B) to the single-layer or, in particular, multi-layer plastic film strip (106, 108) of the reinforcement region (44, 46) and also to the front wall (6) or the rear wall (8), in particular to the at least one inner layer (28, 32), in particular the inner layer, and the outer layer (30, 34) of the front wall (6) or the rear wall (8).

16. Plastic carrier bag (1) according to one of claims 13 to 15, characterized in thatthe single- or in particular multi-layer plastic film strip (106) of the reinforcement region (44) of the front wall (6) is fastened over all of its layers to the inner layer of or at a distance from the first side edge (10) in the direction of or up to the second side edge (12) by means of the first weld, in particular in the form of the first continuous longitudinal weld, to form a first connecting region (52), in particular a first connecting strip, and wherein the single- or in particular multi-layer plastic film strip (108) of the reinforcement region (46) of the rear wall (8) is fastened over all of its layers to the inner layer of or at a distance from the first side edge (10') in the direction of or up to the second side edge (12') by means of the second weld, in particular in the form of the second continuous longitudinal weld, to form a second connecting region (52'), in particular a second connecting strip,wherein the first and second connection areas (24A, 24B) of the retaining loop (20) connected to the front wall (6) and the first and second connection areas (26A, 26B) of the retaining loop (22) connected to the rear wall (8) are present on the inside of the front and rear walls (6, 8) in the area of ​​the single- or multi-layer plastic film strip (106, 108) of the reinforcement area (44, 46), wherein a continuation section (36, 38) adjoins the outer layer (30, 34) of the front and rear walls, wherein the continuation section of the front and rear walls forms or comprises the plastic film strip (106, 108) of the reinforcement area (44, 46), wherein the continuation section (36, 38) of the front and rear walls extends at least in sections along the inner layer of the front and rear walls and this rests, wherein the outer layer (30, 34) of the front and rear walls (6, 8), in particular in the transition to the continuation section (36, 38),encompasses or forms the opening edge (14), and wherein the at least one inner layer (28, 32), in particular the inner layer, extends with its upper edge (40, 42) up to the opening edge (14) or at a distance therefrom, wherein the outer layer and the continuation section (36) of the front wall (6) and the outer layer and the continuation section (38) of the rear wall (8) are each formed continuously, in particular in one piece, and wherein the first connecting region (52), in particular first connecting strips, is spaced closer to the lower edge of the reinforcement region (44) of the front wall than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region (44), wherein the second connecting region (52'), in particular second connecting strips, is spaced closer to the lower edge of the reinforcement region (46) of the rear wall than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region (46),wherein the outer layer (30, 34) of the front wall (6) is welded to the outer side of the at least one inner layer (28), in particular the inner layer, along the extension from or at a distance from the first side edge (10) in the direction of or up to the second side edge (12), in particular with a continuous longitudinal weld, to form a third connecting region (54), in particular a third connecting strip, wherein the outer layer (34) of the rear wall (8) is welded to the outer side of the at least one inner layer (32), in particular the inner layer, along the extension from or at a distance from the first side edge (10') in the direction of or up to the second side edge (12'), in particular with a continuous longitudinal weld, to form a fourth connecting region (54'), in particular a fourth connecting strip, wherein these third and fourth connecting regions (54, 54'),in particular third and fourth connecting strips, each closer to the lower edge of the reinforcement area (44, 46) than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement area (44, 46), wherein the first and second connection areas (24A, 24B, 26A, 26B) of the holding loops (20, 22) connected to the front wall (6) and / or, in particular, to the rear wall (8), obtained by welding, are spaced from the first, second, third and fourth connecting areas (52, 52', 54, 54'), in particular the first, second, third and fourth connecting strips, in particular do not overlap with the first, second, third and fourth connecting areas (52, 52', 54, 54'), wherein the holding loop connected to the front wall (6) and / or the holding loop connected to the rear wall (8) on the inside, in each case in its first and second connection areas 24A, 24B, 26A, 26B), directly or indirectly,is welded to the single- or in particular multi-layer plastic film strip (106, 108) of the reinforcement region (44, 46) and to the at least one inner layer (28, 32), in particular the inner layer, and the outer layer (30, 34).

17. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the first and the second side wall (102, 104) are single-layered and / or, in particular and, that the first and the second side wall (102, 104) have a side fold and / or, in particular and, that the first and the second side wall (102, 104) are based on separate material cuts and / or, in particular and, that the bottom fold (16) represents an outwardly directed bottom fold in the erected filled state of the plastic carrier bag (1).

18. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe front and / or, in particular, rear wall (6, 8), in particular the outer layer, the single-layer or, in particular, multi-layer, preferably double-layer, plastic film strip (106, 108) of the reinforcement region, in particular the continuation section of the inner and / or outer layer, in particular the outer layer, and the at least one inner layer (28, 32), in particular the inner layer, of the front and / or rear wall (6, 8), in particular of the front and rear wall (6, 8), as well as the holding loops connected to the front wall (6) and / or to the rear wall (8), as well as the first and second side walls (102, 104) are formed or consist of polyolefins, preferably polyethylene, particularly preferably HD or LD polyethylene, in particular LD polyethylene.

19. Plastic carrier bag (1) according to one of claims 16 to 18, characterized in thatthe first and third connecting regions (52, 52') each overlap with the second and fourth connecting regions (54, 54'), in particular forming uniform connecting regions (55, 55').

20. Plastic carrier bag (1) according to one of claims 16 to 19, characterized in that the opening edge (15) of the first side wall (102) and the opening edge (15') of the second side wall (104) are each at the level of and, with respect to the opening end (4), preferably below the first, second, third and / or, in particular, fourth connecting regions (52, 52', 54, 54') and particularly preferably below the uniform connecting regions (55, 55').

21. Plastic carrier bag (1) according to one of claims 16 to 20, characterized in that the continuation section (36, 38) present on the inner layer of the front and rear walls is designed to be at least double-layered at least in some areas by means of folding over.

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