Patent Application
20210276764
The present disclosure relates to a reusable plastic film bottom bag (i.e., a reusable bag made of plastic film and having a bottom) and the use thereof, as well as a blank for a plastic film bottom bag.
Carrier bags, such as those usually provided by retailers to customers for transporting goods, are routinely made of plastic or paper. Although these transport receptacles have hitherto been repeatedly provided for single use, there is now increased demand for suitable transport containers which can be consistently reused. In addition to carrier bags made of textile materials, recyclable plastic carrier bags, typically in the form of flexiloop carrier bags, are frequently also used for this purpose. Such conventional flexiloop bags are disclosed, for example in DE 101 16 920 A1, WO 01/51372 A1, and DE 40 12 897 A1.
Reusable plastic carrier bags are regularly considerably larger than single-use carrier bags made of plastic. This requires sufficient load-bearing strength. This is because the mechanical wear otherwise impedes reusability. However, larger-sized recyclable plastic carrier bags are associated with the problem of insufficient sturdiness. That is, only after the plastic carrier bag has been filled to a certain degree is the filling opening generally in a state that filling is possible without the bag walls or the handles having to be held by a hand.
Thus, there is accordingly a need to provide a plastic bag which is no longer subject to the described disadvantages of the prior art and which, in some cases, allows unimpaired, in some other cases two-handed, filling, especially in an unfilled state There is also a need to provide a plastic bag which, in an unfilled state, can be stood in such a way that an opening with a sufficiently large cross section is obtained, and which remains self-sustaining.
Consequently, according to aspects of one or more design variants, a plastic film bottom bag (i.e., a plastic film bag with a bottom) having a bag opening and an opposite bag end has been found, comprising:
Further features and advantages of the present disclosure arise from the following description, in which exemplary embodiments of the present disclosure are explained by way of example with reference to schematic drawings, without thereby limiting the present disclosure.
According to an expedient embodiment of the present disclosure, a high degree of sturdiness and a consistently wide-opened bag opening are obtained with a first design variant of the plastic film bottom bag according to the present disclosure such that the first plastic film side wall is provided with the first side fold welded or adhesive joint, in some cases side fold welded joint, and/or the second plastic film side wall is provided with the second side fold welded or adhesive joint, in some cases side fold welded joint. In the preceding embodiment, the side fold welded or adhesive joint, in some cases side fold welded joint, is present in each case in a region of the side folds of the first plastic film side wall and second plastic film side wall. The present disclosure further discloses a configuration in which, in the case of one of the two film side walls, the side fold is designed as a side fold welded or adhesive joint, in some cases side fold welded joint.
According to the present disclosure, the term side fold welded or adhesive joint is not intended to automatically mean that the first and the second side wall sections of a side wall have to be connected to one another via this welded or adhesive joint. Rather, the first and second side wall sections can also be in one piece. In this case, the welded or adhesive joint, in some cases welded joint, is present in the transition from the first to the second side wall section.
A plastic film bottom bag according to the first design variant, which is free and in some cases stable in an unfilled state and has a consistently sufficiently wide-opened bag opening, is also obtained in an expedient embodiment such that the first side fold welded or adhesive joint, in some cases side fold welded joint, present between the first side wall section and the second side wall section of the first side wall, constitutes an outwardly facing side fold welded or adhesive joint seam, or that the second side fold welded or adhesive joint, in some cases side fold welded joint, present between the first side wall section and the second side wall section of the second side wall, constitutes an outwardly facing side fold welded or adhesive joint seam. Advantageous results are obtained when both the first and the second side fold welded or adhesive joints, in some cases side fold welded joints, each constitute an outwardly facing side fold welded or adhesive joint seam. This adhesive or welded seam has an average width in a range from 1.0 to 4.0 mm, in some cases in a range from 1.5 to 3.5 mm, in highly expedient embodiments.
The present disclosure further provides plastic film bottom bags according to the first design variant, in which a fold, in some cases crease, is present in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall, or in which a fold, in some cases crease, is present in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall, or in which a fold, in some cases crease, is present in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, or in which a fold, in some cases crease, is present in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall. Such configurations are highly expedient in which a fold, in some cases crease, is present in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall, and in which, furthermore, a fold, in some cases crease, is present in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall, and in which a fold, in some cases crease, is present also in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, and in which a fold, in some cases crease, is present in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall.
The present disclosure further provides plastic film bottom bags according to the first design variant of the present disclosure, in which in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film front wall and the first side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam, or in which in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film front wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam, or in which in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film rear wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam, or in which in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film rear wall and the second side wall section of the second plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam. This embodiment is also referred to as the third embodiment of the plastic film bottom bag according to the present disclosure. Such embodiments are highly expedient for this purpose in which in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film front wall and the first side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, and in which in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film front wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, and/or, in some cases and, in which in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film rear wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, and in which in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall, in some cases along and in the region of the fold, in some cases crease, the plastic film rear wall and the second side wall section of the second plastic film side wall are welded or adhesively bonded to one another, in some cases welded.
The present disclosure further provides a second design variant of a plastic film bottom bag according to the present disclosure having a bag opening and an opposite bag end, comprising
In the second design variant of the plastic film bottom bag according to the present disclosure, in some cases a pronounced sturdiness and independent bag opening is also achieved in that in the transition from the plastic film front wall to the first side wall section of the first plastic film side wall, in some cases along and in the region of a fold or crease, the plastic film front wall and the first side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam, and in the transition from the plastic film front wall to the first side wall section of the second plastic film side wall, in some cases along and in the region of a fold or crease, the plastic film front wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam, and/or, in some cases and, in the transition from the plastic film rear wall to the second side wall section of the first plastic film side wall, in some cases along and in the region of a fold or crease, the plastic film rear wall and the second side wall section of the first plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam, and in the transition from the plastic film rear wall to the second side wall section of the second plastic film side wall, in some cases along and in the region of a fold or crease, the plastic film rear wall and the second side wall section of the second plastic film side wall are welded or adhesively bonded to one another, in some cases welded, in some cases so as to form a seam or casing seam.
According to the present disclosure, there is a crease if the same has been produced with the aid of a tool provided for this purpose or a machine provided for this purpose. Such mechanically produced creases are regularly designed in the form of a bent edge. If such a bent edge is produced without the aid of a tool, a fold is to be understood here according to the present disclosure.
The present disclosure further provides such plastic film bottom bags of the second design variant according to the present disclosure in which the first side fold is formed in sections or completely in the form of a, in some cases outwardly facing, side fold welded or adhesive joint, and/or in which the second side fold is formed in sections or completely in the form of a, in some cases outwardly facing, side fold welded or adhesive joint. This embodiment substantially corresponds to a third design variant of a plastic film bottom bag according to the present disclosure. The third design variant of a plastic film bottom bag according to the present disclosure combines the embodiments of the first and second design variants with respect to the side fold welded or adhesive joint(s) and the welding or adhesive bonding of the plastic film front wall and plastic film rear wall to the respective plastic film side walls. The third design variant of a plastic film bottom bag according to the present disclosure can thus be achieved proceeding from the first design variant as well as proceeding from the second design variant.
Expedient results are also obtained in the second design variant when both the first and the second side fold welded or adhesive joint, in some cases side fold welded joint, each constitute an outwardly facing side fold welded joint seam or side fold adhesive joint seam. In the second design variant, this adhesive and in some cases welded seam also has an average width in a range from 1.0 to 4.0 mm, in some cases in a range from 1.5 to 3.5 mm, in highly expedient embodiments.
Very good sturdiness and extremely reliable provision of a bag opening, suitable for filling, of a free-standing plastic film bottom bag according to the present disclosure can be achieved surprisingly both for the first design variant and also the second design variant when it is ensured that the plastic film front wall has a single-layer or multi-layer film strip on the inside and/or outside in the region of the bag opening edge, or that the first plastic film rear wall has a single-layer or multi-layer film strip on the inside and/or outside in the region of the bag opening edge, or that the first plastic film side wall has a single-layer or multi-layer film strip on the inside and/or outside in the region of the bag opening edge, or that the second plastic film side wall has a single-layer or multi-layer film strip on the inside and/or outside in the region of the bag opening edge. Such embodiments are highly expedient in which the plastic film front wall has a single-layer or multi-layer film strip on the inside and/or outside, in some cases on the inside, in the region of the bag opening edge, and the plastic film rear wall has a single-layer or multi-layer film strip on the inside and/or outside, in some cases on the inside, in the region of the bag opening edge. Embodiments of this type are very highly expedient in which the plastic film front wall on the inside and/or outside, in some cases on the inside, in the region of the bag opening edge has a single-layer or multi-layer film strip, the plastic film rear wall has a single-layer or multi-layer film strip on the inside and/or outside, in some cases on the inside, in the region of the bag opening edge, the first plastic film side wall has a single-layer or multi-layer film strip on the inside and/or outside, in some cases on the inside, in the region of the bag opening edge, and the second plastic film side wall has a single-layer or multi-layer film strip on the inside and/or outside, in some cases on the inside, in the region of the bag opening edge.
In this case, the single- or multi-layer film strip, in some cases as a component of the plastic film front wall, the plastic film rear wall, the first plastic film side wall, and/or the second plastic film side wall, generally constitutes an opening edge seam. In this case, highly expediently, the film strips can each also be formed in one piece with the plastic film front wall, the plastic film rear wall, the first plastic film side wall, or the second plastic film side wall.
Consequently, in one embodiment, the opening edge can be formed by folding at the upper end of the plastic film front wall or the plastic film rear wall. If, for example, a multi-layer plastic film front wall or plastic film rear wall is used, the single-layer or multi-layer film strip can be obtained by folding over one or more layers of this multi-layer system.
For many applications, it has proven to be highly expedient to use a single-or multi-layer film material for the plastic film front wall and/or plastic film rear wall for the plastic film bottom bag, according to the present disclosure, of the first and the second design variant. Suitable plastic materials are polyolefins such as polyethylene and/or polypropylene, and in a highly expedient configuration HD polyethylene.
In one embodiment, the plastic film bottom bag according to the present disclosure can be formed substantially in one piece.
In a further, highly expedient embodiment, the plastic film front wall, the plastic film bag bottom, and the plastic film rear wall can be present in a contiguous manner, expediently without a connecting joint and highly expediently in one piece.
In a further, likewise highly expedient embodiment, the plastic film front wall, the first side wall section of the first plastic film side wall, and the first side wall section of the second plastic film side wall can be present in a contiguous manner, expediently without a connecting joint and highly expediently in one piece.
And in a further highly expedient embodiment, additionally or alternatively, the plastic film rear wall, the second side wall section of the first plastic film side wall, and the second side wall section of the second plastic film side wall can be present in a contiguous manner, expediently without a connecting joint and highly expediently in one piece.
Using the above-described embodiments of highly expedient embodiments, the plastic film bottom bag, according to the present disclosure, of the first and second design variant can be manufactured in such a way that the first side wall section and the second side wall section forming the first side wall are connected to one another in the region of the first side fold welded or adhesive joint, and that the first and second side wall sections forming the second side wall are connected to one another in the region of the second side fold welded or adhesive joint.
A plastic film bottom bag according to the present disclosure is thus also characterized in one embodiment by the fact that, in addition to (or other than) the first and second side fold welded or adhesive joint in the region of the plastic film front wall, the plastic film rear wall, the first plastic film side wall, and the second plastic film side wall, in some cases including the respective transitions, said plastic film bottom bag does not have any further welded joint or adhesive joint extending from or at a distance from the bag opening edge in the direction of the bag end or up to the bag end.
Furthermore, for the plastic film bottom bag according to the present disclosure, provision may be made for a crease or fold (also referred to as a first bottom crease or bottom fold) to be present in the transition from the plastic film front wall to the plastic film bag bottom, and/or for the plastic film front wall and the plastic film bag bottom to be welded, in some cases welded to one another, or adhesively bonded to one another, in the transition from the plastic film front wall to the plastic film bag bottom, in some cases along and in the region of the crease or fold, in some cases so as to form a seam or casing seam. Furthermore, provision may be made, alternatively or in some cases additionally, for there to be a crease or fold (also referred to as a second bottom crease or fold) in the transition from the plastic film rear wall to the plastic film bag bottom, and/or for the plastic film rear wall and the plastic film bag bottom to be welded, in some cases welded to one another, or adhesively bonded to one another, in the transition from the plastic film rear wall to the plastic film bag bottom, in some cases along and in the region of the crease or fold, in some cases so as to form a seam or casing seam. The plastic film bag bottom can also have a center crease which extends at a distance from or from the first side edge in the direction of or up to the opposite second side edge.
Pronounced sturdiness can also be obtained with such plastic film bottom bags in which a fold or crease (also referred to as a third bottom fold or crease) is present in the transition from the first plastic film side wall to the plastic film bag bottom, or in which in some cases in the transition from the first plastic film side wall to the plastic film bag bottom, in some cases along and in the region of the fold or crease, the first plastic film side wall and the plastic film bag bottom are welded, in some cases welded to one another, or adhesively bonded to one another, in some cases so as to form a seam or casing seam. Furthermore, alternatively or in some cases additionally, provision may be made for there to be a fold or crease (also referred to as a fourth bottom fold or crease) in the transition from the second plastic film side wall to the plastic film bag bottom, or for the second plastic film side wall and the plastic film bag bottom to be welded, in some cases welded to one another, or adhesively bonded to one another, in some cases in the transition from the second plastic film side wall to the plastic film bag bottom, in some cases along and in the region of the fold or crease, in some cases so as to form a seam or casing seam.
The present disclosure further provides plastic film bottom bags according to the present disclosure wherein
In an expedient embodiment of the first design variant of the present disclosure, the first side fold welded or adhesive joint and the second side fold welded or adhesive joint extend up to the bag end, in some cases not adhesively bonded or welded to the plastic film bag bottom, a first welded or adhesive joint, in some cases welded joint, extends from a first mouth point, in which the first bottom crease leads into the first side edge of the plastic film front wall, and the first side fold welded or adhesive joint at a distance from the plastic film bag bottom, and a second welded or adhesive joint, in some cases welded joint, extends from a second mouth point, in which the second bottom crease leads into the first side edge of the plastic film rear wall, and the first side fold welded or adhesive joint at a distance from the plastic film bag bottom, and/or, in some cases and, a third welded or adhesive joint, in some cases welded joint, extends from a third mouth point, in which the first bottom crease leads into the second side edge of the plastic film front wall, and the second side fold welded or adhesive joint at a distance from the plastic film bag bottom, and a fourth welded or adhesive joint, in some cases welded joint, extends from a fourth mouth point, in which the second bottom crease leads into the second side edge of the plastic film rear wall, and the second side fold welded or adhesive joint, at a distance from the plastic film bag bottom.
In this case, the first side fold welded or adhesive joint, the first welded or adhesive joint, and the second welded or adhesive joint have a common first mouth region. Alternatively and in some cases additionally, the second side fold welded or adhesive joint, the third welded or adhesive joint, and the fourth welded or adhesive joint have a common second mouth region.
Such embodiments of the first design variant of the present disclosure are highly expedient in which in the area which spans between the first mouth point, in which the first bottom crease leads into the first side edge of the plastic film front wall, and the second mouth point, in which the second bottom crease leads into the first side edge of the plastic film rear wall, and the first mouth region, two triangular plastic film sections are adjacent, in some cases bear against one another, and/or, in some cases and, in which two triangular plastic film sections are adjacent, in some cases bear against one another, in the area which spans between the third mouth point, in which the first bottom crease leads into the second side edge of the plastic film front wall, and the fourth mouth point, in which the second bottom crease leads into the second side edge of the plastic film rear wall, and the second mouth region. As a result, a high degree of standing stability is obtained.
The plastic film bottom bags, according to the present disclosure, of the first and second design variants are expediently also provided with at least one first carrying element and/or at least one second carrying element. This first and/or second carrying element can be a grip hole, a holding loop, or a handle. The holding loop or the handle are expediently applied or attached to the plastic film front wall and/or to the plastic film rear wall at or adjacent to the bag opening.
Therefore, the first carrying element or its connecting sections can expediently be attached or present in the region of the single-layer or multi-layer film strip, in some cases opening edge seam, of the plastic film front wall, and the second carrying element or its connecting sections can be attached or present in the region of the single- or multi-layer film strip, in some cases opening edge seam, of the plastic film rear wall.
The above-described embodiment of a plastic carrier bag according to the present disclosure also ensures, in addition to excellent ease of carrying, improved mechanical load capacity, in some cases of a reusable plastic carrier bag. Both the holding loop per se and its connection to the body of the plastic carrier bag are characterized by particular tear resistance.
A particularly robust and loadable plastic carrier bag is obtained by combining the features forming the reinforcing region with the features of the holding loop.
The present disclosure also provides such plastic film bottom bags according to the present disclosure in which the at least one layer of a multi-layer front wall and/or rear wall, in some cases the inner layer, comprises or constitutes a foamed plastic film, in some cases a foamed polyolefin film, in some further cases a foamed polyethylene film and in some even further cases a foamed LD polyethylene film. As a result, a textile-like appearance can be reinforced during handling, for example during the folding together, of the plastic carrier bag according to the present disclosure.
In addition, it has surprisingly been found that a highly satisfactory standing of the plastic film bottom bags according to the present disclosure is also achieved in that the plastic film bag bottom has an embossing welding pattern, applied in some cases to the outer side. This embossing welding pattern can be designed, for example, in the form of a honeycomb structure, line structure, or annular structure. Naturally, other, in some cases geometric, embossing patterns are also possible. The use of a honeycomb structure has proven to be highly suitable for many applications.
Alternatively or additionally, the plastic film bottom bags according to the present disclosure can also be provided with an inlay bottom. In this case, use is expediently made of such inlay bottoms which are designed to be more rigid than the plastic film bag bottom. By using an, advantageously removable, in some cases loose, inlay bottom, the sturdiness of the plastic film bottom bags according to the present disclosure can likewise be increased. When inlay bottoms are used, it is also possible to reliably keep the still unfilled plastic film bottom bag open. The inlay bottom can be made, for example, of LD polyethylene, HD polyethylene, or polypropylene.
In addition, the present disclosure provides a blank, also referred to as a first blank, for a plastic film bottom bag, in some cases a plastic film bottom bag according to the present disclosure, made of a single-layer or multi-layer plastic film having a plastic film front wall section, a substantially rectangular or square plastic film bag bottom section adjoining, in some cases integrally, said plastic film front wall section along a first bottom side edge, and a plastic film rear wall section adjoining, in some cases integrally, said plastic film bag bottom section, opposite the plastic film front wall section, along a second bottom side edge, wherein triangular or trapezoidal sections respectively adjoin, in some cases integrally, the opposite bottom side edges of the plastic film bag bottom section which are not connected to the plastic film front wall section and the plastic film rear wall section (also referred to as third and fourth bottom side edges), wherein the plastic film front wall section, at side edge contours opposite one another, in some cases integrally, in each case has an extension section having an inclined bottom-side edge, which forms an obtuse angle (α) with the first bottom side edge when the blank is arranged in a plane, wherein the distance between the opposite side edge contours of the plastic film front wall section corresponds substantially to the distance between the third and fourth bottom side edges, and wherein the plastic film rear wall section, at side edge contours opposite each other, in some cases integrally, in each case has an extension section, having an inclined bottom-side edge, which forms an obtuse angle (α′) with the second bottom side edge when the blank is arranged in a plane, wherein the distance between the opposite side edge contours of the plastic film rear wall section corresponds substantially to the distance between the third and fourth bottom side edges.
In addition, the present disclosure further provides a blank, also referred to as a second blank, for a plastic film bottom bag, in some cases a plastic film bottom bag according to the present disclosure, in some further cases a plastic film bottom bag, according to the present disclosure, of the third design variant, having a substantially rectangular or square basic shape and made of a single-layer or multi-layer plastic film, comprising a plastic film bag bottom section, a substantially rectangular or square plastic film bag bottom section adjoining, in some cases integrally, said plastic film front wall section along a first bottom side edge, and containing opposite third and fourth bottom side edges, and a plastic film rear wall section adjoining, in some cases integrally, said plastic film bag bottom section, opposite the plastic film front wall section, along a second bottom side edge, wherein the plastic film front wall section in each case has a substantially rectangular extension section, in some cases in one piece, on side edge contours which are opposite each other, wherein the plastic film rear wall section in each case has a substantially rectangular extension section, in some cases in one piece, on side edge contours which are opposite each other, and wherein a welded joint, in some cases so as to form a seam or casing seam, is present in each case along the mutually opposite side edge contours of the plastic film front wall section and wherein a welded joint, in some cases so as to form a seam or casing seam, is present in each case along the mutually opposite side edge contours of the plastic film rear wall section.
In a highly expedient embodiment, the second blank has in each case, along the third and fourth bottom side edges, a welded joint, in some cases so as to form a seam or casing seam, wherein said welded joints merge at their mutually opposite ends substantially without transition into the welded joints which are present along the corresponding side edge contours.
On either side of this first side fold welded joint 16 there are a first side wall section and a second side wall section 18, 20, which each extend from the first side fold welded joint 16 up to the first side edge 4, 10 of the plastic film front wall 2 and the plastic film rear wall 8 respectively. In the same way, the second plastic film side wall 22 has a second side fold welded joint 24 extending from the bag opening edge up to the bag end 32, wherein on either side of this second side fold welded joint 24 there are a first side wall section and a second side wall section 26, 28, which each extend from this second side fold welded joint 24 up to the second side edge 6, 12 of the plastic film front wall 2 and the plastic film rear wall 8 respectively. Similarly, in the embodiment shown, the second side fold welded joint 24 is also formed as an outwardly facing side fold welded joint seam 25.
At the bag end 32 is a plastic film bag bottom 68, which has a first bottom crease 52 in the transition to the front wall 2 and a second bottom crease 54 at the transition to the rear wall 8. A first carrying loop 70 is attached to the plastic film front wall 2 and a second carrying loop 72 is applied to the plastic film rear wall 8. These carrying loops can be designed, for example, in each case in the form of a hollow tube, in some cases double-layer hollow tube. The carrying loops are expediently applied to the inside of the plastic film front wall 2 and the plastic film rear wall 8. The embodiment of a plastic film bottom bag 1 according to the present disclosure shown in
In terms of production technology, it has been found to be highly expedient in many cases to supplement the plastic film bag bottom 68 on each of the narrow sides with triangular elements, in some expedient cases in one piece, spanned between the mouth or corner points 58, 62, 76 and the mouth or corner points 60, 64, 80. In this embodiment, a connection with the first side wall section 18 of the first side wall 14 is produced along the welded joint between the mouth or corner points 58 and 62, and a connection to the second side wall section 20 of the first side wall 14 is produced along the welded joint between the mouth or corner points 62 and 76. Similarly, there is a connection of the first side wall section 26 of the second side wall 22 along the welded joint between the mouth or corner points 60 and 64, and there is a connection of the second side wall section 28 of the second side wall 22 along the welded joint between the mouth or corner points 64 and 80. The side fold welded joints 16, 24 can extend, for example, up to the corner points or mouth points 62 and 64 of the welded joints 63, 65 and 67, 69 respectively. It has also proven to be expedient in many cases to continue the center fold or center crease 56 present in the plastic film bag bottom 68 beyond the plastic film bag bottom 68 in the triangular elements adjoining the narrow sides up to the corner or mouth points 62 and 64 (see dashed lines).
Details about the production of the welded joints 63, 65 and 67, 69 respectively are described in connection with the description of the blank according to
The perspective top view of the first design variant of
In the same way, the second plastic film side wall 22 has a second side fold 19 extending from the bag opening edge up to the bag end 32, wherein on either side of this second side fold 19 there are a first and a second side wall section 26, 28, which each extend from this second side fold 19 up to the second side edge 6, 12 of the plastic film front wall 2 and the plastic film rear wall 8 respectively. At the bag end 32 is a plastic film bag bottom 68, which has a first bottom crease 52 in the transition to the front wall 2 and a second bottom fold 54 at the transition to the rear wall 8.
A first carrying loop 70 is attached to the plastic film front wall 2 and a second carrying loop 72 is applied to the plastic film rear wall 8. In the embodiment of a plastic film bottom bag 1 according to the present disclosure shown in
In addition, the bag opening edges of the plastic film front wall 2, the plastic film rear wall 8, the first plastic film side wall 14 and the second plastic film side wall 22 in the region of the bag opening 30 are reinforced by a folded-over film strip 50, 51, 53, 55 in the embodiment shown so as to form a peripheral seam. As a result, the present disclosure discloses an expedient, more reliable configuration for the immediate unimpeded filling of a still completely empty bag with two hands, in combination with the side fold welded joints 16, 24 and the casing seams 21, 23, 27, 29 (see also
In the embodiment shown, the plastic film front wall section 2B and the first side wall sections 18B, 26B of the first and second side walls are formed in one piece. There are folds, creases or welded joints, for example in the form of a casing seam, in the transition from the plastic film front wall section 2B to said first side wall sections 18B, 26B in the finished product. Corresponding thereto, the plastic film rear wall section 8B has a second side wall section 20B of the first side wall and, on the opposite side, has a second side wall section 28B of the second side wall. The plastic film front wall section 2B and the plastic film rear wall section 8B are connected to each other in the blank 100B via the bag bottom section 68B. In the embodiment shown, the plastic film front wall section 2B, including the first side wall sections 18B, 26B, the plastic film rear wall section 8B, including the second side wall sections 20B, 28B, and the bag bottom section 68B are in one piece.
The plastic film bag bottom of the plastic film bottom bag produced from the blank 100B has a substantially rectangular shape (indicated by the dotted lines), but can also have a square basic shape. The bag bottom section 68B has rectangularly shaped extensions 102B, 104B on its opposite sides. These rectangularly shaped extensions 102B and 104B are in one piece with the first side wall sections 18B and 26B or with the second side wall sections 20B and 28B. Consequently, the blank 100B can be obtained from a single rectangular film strip. By, for example, folding up the plastic film front wall section 2B and the plastic film rear wall section 8B and bringing the first side wall sections 18B, 26B forming the first side wall and the second side wall sections 20B, 28B forming the second side wall towards one another, the adjoining edge contours 114B and 116B as well as 118B and 120B can be connected, in some cases welded, to one another so as to form the bag body. The welded joints 63 and 65 as well as 67 and 69, respectively, are formed by connecting, such as welding, to one another the areas (indicated in
The outer triangular section of the first side wall, which is delimited by the welded joints 63 and 65, contains the first side fold welded joint 16. The inner triangular section extends from the crease line 150B to the intersection of the welded joints 63 and 65 with the first side fold welded joint 16 and the point where the dashed lines 124B and 126B meet. Similarly, corresponding inner and outer triangular sections are formed for the second side wall.
The features of the present disclosure disclosed in the above description, in the claims and in the drawings can be essential both individually and in any combination for implementing the present disclosure in its various embodiments.
The various embodiments described above can be combined to provide further embodiments. All of the patents, patent applications, and non-patent publications referred to in this specification and/or listed in the Application Data Sheet are incorporated herein by reference, in their entirety. Aspects of the embodiments can be modified, if necessary to employ concepts of the various patents, applications, and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
| Number | Date | Country | Kind |
|---|---|---|---|
| 20161169.6 | Mar 2020 | EP | regional |
