EP3045405B1 - Plastic bag and plastic pouch, in particular for online shipping - Google Patents

Description

The present invention relates to a plastic bag and a plastic bag, in particular an online shipping bag and an online shipping bag. Furthermore, the invention relates to the use of such a mailer and such a mailer for transporting shipping, especially of shipping the online trade.

Mailing bags are well known in the art.

Conventional plastic bags or bags are often designed single-layered. However, this has disadvantages in terms of protection against shocks. Also, such single-ply plastic bags or bags can be perforated very easily, so that the contents are contaminated or even lost.

As a shipping bag paper bags are often used with an inner layer of bubble wrap. However, these have the disadvantage that the envelopes due to the air cushion even without content are already very thick. Also, the production is very expensive.

In DE 42 19 258 a shipping bag is described, each of the insides of the front and back facing two layers of polyethylene film contains. Between these two PE films air chambers are provided, which extend over the entire length of the mailer. The individual layers forming the shipping bag are circumferentially welded together in the region of the upper edge. The outer layers of the mailer are polyethylene coated webs.

In the DE 43 28 324 C2 a padded shipping bag is described, the wall consists of two forming a cover for the padding paper layers. These paper layers are interconnected along their edge. Furthermore, there is an insert made of embossed paper, which forms a padding and is continuous from the front over the fold formed by a fold line bottom to the back of the bag extends. As with the DE 42 19 258 is it synonymous with the DE 43 28 324 C2 around a padded paper envelope.

The in DE 71 42 769 described air-cushioned shipping bag is characterized in that the web of a bubble wrap is connected to a weldable plastic-coated web of a substrate by linear welds. These line-shaped welds can run in any direction and serve solely to stiffen the shipping bag. The bubble wrap is formed from a variety of knob-like, sealed or sealed air cushions.

From the DE 82 29 927 goes out a mailer made of corrugated cardboard, in which a padding and stiffening are accomplished in the way of running parallel to the side edges so-called scratches on the inside. The said scratches are in direct contact with the interior and are not covered by another film web.

DE 43 43 798 C2 discloses a method of manufacturing an air cushion mailer. The shipping bag obtained by this method is formed from continuous webs, which are brought together and welded together to form air chambers. The composite layer system forming the walls of this mailer comprises a so-called attachment layer, preferably made of LD polyethylene, a paper layer and two layers of plastic as so-called cushion layers.

Finally, leave the DE 10 2009 058 798 an inner shipping pocket with two substantially arranged parallel to each other surface parallel Luftpolsterfolienbereichen and enclosed therein air cushion structures. Tubular designed one-piece air cushion covers can be used here.

The production of the known from the prior art shipping bag is still very complex and regularly leads to very bulky products.

The object of the invention is to overcome the disadvantages of the prior art and in particular to provide plastic bags or pouches, which protect the contents particularly effectively against damage and / or contamination by environmental influences. Furthermore, it is an object of the invention, moisture, especially in the form of rain, from the Keep the contents of the shipping bag and allow a good storage of the shipping bag. It is also an object of the invention to provide a shipping bag design available, which, without sacrificing the upholstery to accept, nevertheless allows the lowest possible packaging volume. Finally, it is an object of the invention to provide shipping bags that can be transported and sorted on conventional letter sorting facilities of postal mail distribution centers without being damaged and / or obstructing the operation of these sorting facilities.

Accordingly, a plastic bag and a plastic bag were found, comprising a front wall, a rear wall, an opening and a bottom and optionally opposite side walls, wherein the front wall and / or the rear wall are at least three-ply, wherein the at least three-ply front wall and / or the at least three-ply Rear wall, a first layer (inner layer), at least one second layer (intermediate layer) and a third layer (outer layer), wherein the first layer with respect to the second layer facing the bag or bag interior and / or forms the inside, wherein the at least one second layer is arranged between the first and third layers and comprises or consists of a plastic film, in particular a polyolefin film, the third layer facing the outer side of the bag or pocket with respect to the second layer and / or forming the outer side, wherein the at least one second layer is spaced a plurality of apart he running ruffled or folded strip-shaped elongated areas, in particular strips, and wherein these at least one second layer by means of welding and / or adhesive seams, which extend transversely to the shirred or folded strip-shaped elongated areas (also called first weld seams) , is connected to the first and / or third layer. The welding or adhesive seams extending transversely to the gathered or folded strip-shaped elongated regions are in this case designed such that they intersect these gathered or folded strip-shaped elongate regions.

In an expedient embodiment, it may be provided that the first layer (inner layer) of the front and / or rear wall, in particular the first and second layers of the front and / or rear wall, each comprise or consist of at least one plastic film, in particular polyolefin film , and / or that the third layer (outer layer) of the front and / or rear wall has at least one plastic film, in particular a polyolefin film, includes or consists of. In particularly advantageous embodiments, the polyolefin films of first, second and / or third layer represent polyethylene films.

A plastic bag or a plastic bag in the sense of the present invention already exists if the intermediate layer (second layer) containing the gathered or folded strip-shaped elongated regions of the front and / or rear wall represents or comprises a plastic film. Accordingly, in one embodiment, the first layer or inner layer and / or the third layer or outer layer can be made of a different material than plastic, for example paper. However, it is particularly advantageous if not only the second layer, but also the first and / or the third layer, preferably the first and third layers, of the front and / or rear wall forming three-layer composite of plastic films are formed. Accordingly, the plastic bags according to the invention also include those containers in which the front wall or the rear wall of the above-described at least three-layer plastic film composite are formed and in which the respective opposite wall based on a paper or paperboard, which optionally laminated with a plastic material can be. In this case, embodiments in which the at least one second layer and the first layer (inner layer) of the front and / or rear wall constitute a plastic film, in particular a polyolefin film, are also particularly suitable. In this variant, the third layer (outer layer) of the front or rear wall can then be based on a material other than plastic, for example a paper or paperboard layer or a metal foil, optionally laminated on a paper, cardboard or plastic layer. Preferably, the outer layer of the front and / or rear wall of a plastic film, in particular polyolefin, formed when the first layer (inner layer) and the at least one second layer (intermediate layer) based on plastic films. Appropriately, the same plastic material is used for such first and second or first, second and third layers, for example polyethylene or polypropylene. In this way one arrives at single-variety containers, which can be recycled particularly simply.

The spaced-apart shirred or folded strip-shaped elongated regions are preferably designed in the form of longitudinal strips. Here, their longitudinal orientation is designed to be many times stronger than their transverse orientation. In this case, one can see the spaced apart shirred or folded strip-shaped oblong areas also as ruffled or folded stripes view or denote. The gathered or folded strip-shaped elongated regions preferably do not intersect. Particularly preferred is between adjacent shirred or folded strip-shaped elongated areas, in particular flat, intermediate section before which separates these adjacent areas.

In one possible embodiment of the plastic bags or pouches according to the invention, it may be provided that the gathered strip-shaped elongate regions represent areas of the second layer in cross-section, in particular substantially gutter-shaped, protuberances, respectively comprising opening and depression. The depression of the protuberance is substantially opposite the opening of the same and can also be regarded as the bottom region of the protuberance. Due to the generally flexible nature of plastic films, the gathered strip-shaped elongated regions generally do not have a uniform shape of protuberance or an identical cross-sectional shape throughout their course. Also, the edges forming the opening of the protuberance may at least temporarily be close to each other, at least temporarily, touching each other or even overlapping, due to the flexible nature of the plastic layer. As a result, the basic orientation of the protuberance, which forms the gathered strip-shaped elongated region, is not lost regularly. The cross-sectional shape of the channel-shaped protuberance corresponds in one embodiment to a substantially U-shaped cross-section.

The valley of the protuberances of the gathered strip-shaped elongate regions is preferably the first layer, and the opening of the gathered strip-shaped elongated regions is preferably facing the third layer. In this way, bags or bags according to the invention can be obtained, which allow a very effective padding in a relatively simple manner, without resulting in a voluminous wall application. Alternatively, it is also possible to face the depression of the protuberances of the gathered strip-shaped elongated regions of the third layer and to mount the opening of the gathered strip-shaped elongated regions of the first layer.

According to a further embodiment, the folded strip-shaped elongated regions can also represent substantially Z-shaped folds of areas of the second layer in cross-section. Even with a substantially Z-shaped fold, as with the protuberance, there is a deviation from the usually smooth-surfaced structure of a plastic film in front. In the area of the Z-shaped folding, there is an increased application of material and thus voluminous areas, which are nonetheless yielding when force is applied and thus also contribute to a cushioning effect.

Furthermore, it has been found to be advantageous that the front wall and the rear wall are at least three layers and respectively comprise the first, second and third layer, wherein in particular the first and second layer and optionally also the third layer of front or rear wall in each case at least one plastic film include or consist of. In this way, one obtains bags or bags that protect the stored therein shipping due to adequate padding sufficiently against damage, especially without a voluminous package format to deliver.

Be particularly useful and pragmatic in the production of such pockets or bags according to the invention have proven in which the shirred or folded strip-shaped elongated areas substantially orthogonal to the welding or adhesive seams.

Further, such embodiments are particularly useful in which the first and / or third layer, in particular the first and third layers, are smooth-surfaced. Foil layers are z. B. smooth surface according to the present invention, if they have not been subjected to a treatment step in which the film has been given at least partially a three-dimensional structure. Thus, plastic films, as they are regularly commercially available wound on rolls, smooth-surfaced films in the context of the invention. These films lie, when spread on a horizontal plane, consistently flat on the surface of this plane.

With regard to manufacture and handling, plastic bags or bags according to the invention have proven to be advantageous in which the bottom is formed by a seam or a fold of the first layers of front wall and rear wall, in particular of at least two layers selected from the first, second and third layer, is trained. Particularly preferably, the at least three-ply front wall and the at least three-ply rear wall are substantially integrally formed, wherein in the transition from front wall to rear wall in the region of the bottom there is a fold produced by folding. In another embodiment, the bottom of the bag or bag may also be a Have bottom fold. As a result, a larger bag or bag volume is achieved. The bottom containing the bottom fold is preferably designed in three layers and in particular has the same structure as the at least three-layer front wall and / or back wall. Also, the bottom containing the bottom fold may be formed of the first layer as described for the front wall and back wall. Particularly preferably, this bottom containing the bottom fold is formed from the first, second and third layers, as described above for the front and rear wall. Here, such plastic bags or bags according to the invention are particularly suitable in which front wall and rear wall and optionally the bottom portion containing the bottom fold part of the same continuous at least three-layer composite film, comprising the first, second and third layers, wherein the separation of the front wall of the rear wall by the folding of the at least three-layer film composite takes place.

The transverse welds and glues can be continuous or discontinuous, with the discontinuous design being preferred.

In the case of the plastic bags or pockets according to the invention, the weld seams are preferably thermoplastic weld seams. These weld seams can be continuous or continuous or discontinuous. It has surprisingly been found that those embodiments are particularly preferred in which the welds are discontinuous.

The transverse adhesive and weld seams (also called first weld seams or adhesive seams) can be linear, as well as strip or bar shapes, ie. H. have a wider design.

Particularly preferably, the at least one second layer is connected to the first layer (inner layer) by means of the welded and / or glued seams, in particular by means of thermoplastic welds, in particular if present in the form of a plastic film.

The transverse weld seams or adhesive seams may, in an expedient embodiment, be formed by a series of spaced welding or adhesive areas, in particular welding spots. These preferably have substantially the same distance to each other as the shirred or folded strip-shaped elongated areas. In this case, it may be provided, for example, that the welds are formed by a series of spaced welds. The welds preferably have substantially the same spacing as the strips.

Particularly satisfactory results in terms of flexibility, stability and upholstery behavior are especially in such plastic bags or bags according to the invention, in which the transverse adhesive or welds the sections of first and second layer and / or second and third layer between adjacent Do not or not completely close spaced shirred or folded strip-shaped elongated areas along these adhesive or welds. That the transverse adhesive or weld seams do not or not completely close the first and second layer portions and / or second and third layer portions between adjacent spaced gathered or folded strip-shaped elongate portions along these adhesive or weld seams. In this case, the welding or adhesive seams can also be formed by a series of spaced-apart welding or adhesive points, which are present in each case in the crossing region of shirred or folded strip-shaped elongated regions and transversely extending welding or adhesive seams. This can be accomplished, for example, by forming the welds through a series of spaced welds, the welds, particularly each weld, preferably each having a weld point at each ruffled or folded strip-shaped elongate region crossing the weld.

Accordingly, it can be provided that the welding or adhesive seams are formed by a series of spaced welding or adhesive areas, in particular welding points, which preferably have substantially the same distance from each other as the shirred or folded strip-shaped elongate areas.

It has proven to be particularly economical in terms of process to allow the glued or welded seams to run essentially parallel to one another. It is also preferred if the gathered or folded strip-shaped elongate regions extend substantially parallel to one another.

Depending on the size of the pouches or pockets according to the invention, these can have, for example, at least 5, in particular 10, adhesive or weld seams.

The plastic bags or plastic bags according to the invention may also have at least 5, in particular at least 15, strip-shaped elongated areas or strips.

The strip-shaped elongate regions of the second layer have orthogonal to their longitudinal orientation in the plane flat on a flat state generally an average extent of at least 1 mm, preferably at least 5 mm and in particular in the range of 1 mm to 2 cm, and more preferably in the range of 0.5 to 1.5 cm, for example 1 cm. The distance between adjacent strip-shaped elongated regions is generally on average at least 1 mm, preferably at least 3 mm and, on average, in particular in the range of 1 mm to 3 cm and particularly preferably in the range of 3 mm to 1.5 cm.

The sections of the second layer, which are present between the strip-shaped elongated regions, also called intermediate sections, are regularly configured in a planar manner. These sections are preferably present in a plane deposited state of the bag or bag according to the invention substantially parallel with the adjacent flat first and third layers.

The plastic bags or bags according to the invention can provide in an expedient embodiment that the number of strip-shaped elongated regions or strips is greater than the number of adhesive or weld seams.

In a preferred embodiment of the plastic bags or - bags according to the invention it is provided that the shirred or folded strip-shaped elongated areas in the direction of opening to the bottom, in particular from the opening to the bottom extend. It has also proved to be advantageous if the gathered or folded strip-shaped regions or strips extend substantially parallel to at least one side edge, in particular both side edges of the front and rear walls. The shirred or folded strip-shaped elongated regions are expediently mounted in the second layer in such a way that they do not intersect or touch, but that a gap or intermediate section remains between them.

In a particularly simple and reliable way to reach very practical plastic bags or bags according to the invention, if either the at least three-ply Rear wall or only the outer layer of the at least three-ply rear wall in the region of the opening protrudes beyond the front wall. This reaching beyond the front wall in the region of the opening section can be folded and used in this way to close the opening. It is particularly preferred that the projecting beyond the front wall portion of the at least three-ply rear wall or the protruding portion of the outer layer on the side remote from the outside of the plastic bag or the plastic bag side has at least one adhesive strip, in particular from the first side edge to the opposite second margin extends. This ensures a reliable and easy-to-handle closure of the plastic bag or the plastic bag according to the invention.

In a further expedient embodiment of the plastic bag or pouch according to the invention, it can be provided that the first, second and third layers in the direction of the edges of the side walls and / or in the direction of the opening by at least one, in particular continuous welding or adhesive seam (also second shit - or adhesive seam called) are connected. In this case, those embodiments are particularly suitable in which the first, second and third layer along the side edges or spaced from the side edges of the front and / or rear wall and / or along the upper edge or spaced from the upper edge and / or along the bottom or spaced from the bottom of the front and / or rear wall by means of at least one, in particular continuous, welding or adhesive seam (also called second welding or adhesive seams) are connected to each other. While the first weld and glue seams represent those weld seams that are transverse to the gathered or pleated strip-shaped elongate regions, the second weld and glue seams are weld seams with which the first, second, and second weld seams third layer from the front and / or back along or spaced from the opening and along or spaced from the side edges of the front and / or back are connected to each other by means of welding or gluing.

Good cushioning properties at the same time simplify the procedure by the fact that the second layer with the third layer only along the welding and / or adhesive seam (second welding or adhesive seam) along or spaced from the

Upper edge of the front and / or rear wall, in particular front and rear walls, and the welding and / or adhesive seams (second weld seams) along or spaced from the side edges of the front and / or rear wall, in particular front and rear walls , connected is. In this embodiment, the edge with the third layer is not also connected via the transverse welding or gluing seams.

In a particularly preferred embodiment of the plastic bag or the plastic bag according to the invention it is provided that the at least one second layer, in particular polyethylene film, by means of the transverse to the shirred or folded strip-shaped elongated areas extending discontinuous welds with the first layer comprising or consisting of a Plastic film, in particular polyethylene film is connected, that the second layer with the third layer, comprising or consisting of a plastic film, in particular polyethylene film, exclusively via the, in particular continuous, weld seam (second weld) along or spaced from the top edge of the front and Rear wall and the, in particular continuous, welds (second welds) along or spaced from the side edges of the front and rear walls connected to the first layer, that the front wall and the rear wall Wesentl are integrally formed, wherein in the transition from front wall to rear wall in the region of the bottom is a fold produced by folding or a bottom fold, and that the shirred or folded strip-shaped elongated areas extend substantially from the opening to the bottom, wherein, in particular continuous, weld along or spaced from the top edge of the front and rear walls of the shirred or folded strip-shaped elongated areas.

Also suitable are plastic bags according to the invention and plastic bags, in which the along the top edge extending or spaced from the top edge, the shirred or folded strip-shaped elongated areas intersecting, in particular continuous, weld or adhesive seam (second welding or adhesive seam), in particular weld , is mounted in such a way that in the area of the intersection with the shirred or folded strip-shaped elongated areas there is no welding or gluing or an incomplete welding or gluing is present that further air passage through these shirred or folded areas in and out of the space between the first and second location and in particular Also in and out of the space between the second and third position is possible. That is, the welding or bonding in these cases must be carried out in a controlled manner such that the gathered or folded strip-shaped elongated regions are not completely sealed, nevertheless a firm and permanently durable connection of the first, second and third layers is brought about.

This makes it possible to collect the walls of the bags and bags according to the invention in stacks with relatively low stack height together, which can reduce transport costs. Also prevents tearing or bursting of the film layers in generic consumption in this way, as this z. B. may occur in sealed dimpled sheets. However, such embodiments are also advantageous in which the welded or adhesive seams connect the first, second and third layers along the upper edge or at a distance from the lower edge so that an air outlet or entry also crosses through the welded or adhesive seams shirred or folded strip-shaped elongated areas is not possible. With the welding or adhesive seams extending along the upper edge or spaced from the upper edge and crossing the gathered or folded strip-shaped elongate regions, it is ensured that no opening, also no section-wise opening between the first and the second layer or between the second and the second third position of the front or rear wall is present, could get into the shipping or could intervene in the components of sorting.

The plastic bag according to the invention may e.g. have at least one grip tab or at least one grip hole.

Furthermore, the plastic bag or pouch according to the invention may have a length and a width, wherein the length is greater than the width and the opening extends substantially over the entire width.

The plastic bag or the plastic bag according to the invention preferably represents an online shipping bag or an online shipping bag.

By "substantially parallel" within the meaning of the present invention, it is to be understood that the strip-shaped elongate regions or the weld or bond lines deviate less than 10 ° from the ideal parallel arrangement. Under essentially "orthogonal" For the purposes of the present invention, those arrangements are also to be included that deviate less than 10 ° from the ideal orthogonal arrangement. For the purposes of the present invention, "substantially the same distance" should also include those embodiments in which the distances do not deviate from one another by more than ten percent.

The present invention is accompanied by the surprising finding that shipping bags and bags can be obtained in a relatively simple manner, without, however, having to accept losses in the cushioning properties. Of particular advantage here is that sufficient cushioning properties are obtained with relatively thin-walled systems. In addition, it is possible to dispense with the use of cardboard or paper, so that one receives pure bags of plastic materials that are easily accessible for recycling. Also, it has proved to be very useful that you can completely dispense with air cushion films containing airtight finished Polsteroppen. As a very special advantage has been found that the bags and bags according to the invention can also be used as a shipping container that can be transported and sorted on conventional Briefsortieranlagen of letter mail distribution centers, which are usually provided only for letters, but not for packages. Products ordered via the mail-order business, such as books or DVDs, are conventionally shipped in large-volume cardboard or bubble packs. As a rule, the dispatch or distribution takes place via parcel distribution centers, which have suitable transport and sorting facilities. For such containers are not accepted by conventional Briefsortieranlagen. There is a risk that these containers destroy components or hang on components of the letter sorting. The bags and bags according to the invention, however, allow a sufficient, the objects to be transported during transport and storage reliably protective packaging casing, which nevertheless manages without a large or bulky volume. With the bags and bags according to the invention for the first time shipping containers for mail order are provided, which can be processed on conventional letter sorting of letter post distribution centers.

Figur 1

eine schematische Frontansicht einer Ausführungsform eines erfindungsgemäßen Beutels.

Figur 2

den Ausschnitt einer Schnittansicht entlang der Schnittlinie A-A der Ausführungsform gemäß Figur 1,

Figur 3

eine weitere Ausführungsform eines erfindungsgemäßen Beutels in Frontansicht,

Figur 4

eine weitere schematische Schnittansicht einer Vorderwand eines erfindungsgemäßen Beutels, und

Figur 5

eine weitere schematische Ausführungsform eines erfindungsgemäßen Beutels in Frontansicht.

Further features and advantages of the invention will become apparent from the following description in the embodiments of the invention with reference to schematic drawings by way of example, without thereby limiting the invention. Showing:

FIG. 1

a schematic front view of an embodiment of a bag according to the invention.

FIG. 2

the section of a sectional view along the section line AA of the embodiment according to FIG. 1 .

FIG. 3

a further embodiment of a bag according to the invention in front view,

FIG. 4

a further schematic sectional view of a front wall of a bag according to the invention, and

FIG. 5

a further schematic embodiment of a bag according to the invention in front view.

FIG. 1 The bag is formed by a front wall 102 and a rear wall 104 which are interconnected along their opposite side edges 110, 112 via welds 116, 118 (second welds). In the illustrated embodiment, the bag bottom 108 is obtained by folding or folding one another on the front wall and the rear wall forming portions of a uniform material web to form a fold 120. In the in FIG. 1 illustrated embodiment, the edge courses of the upper edge 114, 122 of the front and rear walls 102, 104 at substantially the same height. Between these, the opening 106 of the bag 100 is present. Front wall 102 and rear wall 104 are each formed in the illustrated embodiment of three plastic layers. Details regarding this are given below FIG. 2 explained. FIG. 1 one takes ruffled strip-shaped elongated areas or strips 8, which are present in the intermediate layer, ie in the second layer of the three-layer composite film. These shirred elongated regions extend in the illustrated embodiment from the upper edge 114, 122 to the fold 120 of the front and rear walls 102, 104. These strip-shaped regions 8 have a longitudinal extent and are arranged substantially parallel to one another. In the illustrated embodiment, these elongated regions 8 also extend In addition, there are a series of spaced welds 6 (also called first welds) in the front and rear walls 102, 104. In the illustrated embodiment, these extend from the first side edge 110 to the first opposite side edge 112 and extend substantially parallel to each other. These welding lines 6 intersect the shirred elongated regions 8 and are accordingly also referred to as transverse weld seams. These welds 6 contribute to the cohesion of the three-layer film composite of the front and rear walls. Further contribute to the cohesion of this three-layer composite film of front and rear walls 102, 104, the opposite welds 116, 118 at the side edges 110, 112 at. These welds connect not only front and rear walls, but also each of the three-layer composite forming film layers together. Furthermore, the welds 124, 126 (second shit seams) at or slightly spaced from the top edge courses 114, 122 of the front and rear walls 102, 104 also contribute to a cohesion of the three-layered foil composites.

FIG. 2 If a schematic view is taken of a sectional view along the section line AA of the front wall 102 of the bag 100 according to FIG FIG. 1 , FIG. 2 Thus, the structure of the front wall 102 of a first plastic film layer 1, which faces the bag interior and therefore also called inner layer, a third film layer 4, which faces the outside of the bag or forms these and is therefore also called outer layer, and a second plastic film layer 2, which is arranged between the inner layer 1 and the outer layer 4 and is therefore also referred to as an intermediate layer, again. It has proved to be particularly advantageous to manufacture all three plastic film layers made of the same material, in particular polyethylene. In this way you can easily and reliably achieve very strong and strong welds or lines and points. By using substantially identical plastic materials, there is no segregation during thermoplastic welding when the molten film areas harden, but instead a very intimate mixing and thus very good adhesion are achieved. In the in FIG. 2 The shirred regions 8 are shown in cross-sectional view in schematic, idealized form. These elongated regions 8 represent a bulge or protuberance of the otherwise smooth-faced plastic film. For the purposes of the present invention, these regions are referred to as shirred strip-shaped elongated regions. This designation is based on the fact that you can imagine the bulge or protuberance as created by gathering a smooth-surfaced film material, analogous to the shirring of fabrics in the production of garments. In the in FIG. 2 illustrated embodiment, all shirred elongated areas are aligned substantially in the same direction. The shirred elongated regions have a depression or bottom 10 which faces the inner layer 1 and an opening or exit 12 which faces the outer layer. Preferably, the intermediate layer 2 of the front and rear walls 102, 104 is continuously equipped with shirred elongated strip-shaped regions 8 with the orientation described above. Further preferred is the intermediate layer 2, as in FIG. 2 represented by thermoplastic spot welds or areas 18 in the region of the depression 10 of the shirred areas 8 with the inner layer 1 connected. The welding points or areas 18 located at a height form a welding line 6 (see also FIG FIG. 1 ). Moreover, it is possible, but not essential, to provide further welding spots or areas between adjacent shirred areas 8 in order to connect the intermediate layer 2 to the inner layer 1 (not shown). However, this is not absolutely necessary in order to arrive at a sufficiently strong composite of inner and intermediate layer. Of course, it is also possible to provide welding points or areas between the inner layer 1 and the intermediate layer 2 in the sections which lie between the gathered strip-shaped elongated regions 8. In the illustrated embodiment, the intermediate layer 2 is not connected by additional Schwcißareale or points with the outer layer 4. In this case, the connection of the outer layer 4 with the intermediate layer 2 is accomplished exclusively via the weld seams 116 and 118 on the side edges 110 and 112 and through the weld seams 114 and 122 on the upper edge progressions of the front and rear walls 102, 104. In this way, although the outer layer 4, unlike the intermediate layer 2 in the illustrated preferred embodiment does not have shirred areas, but is smooth surface, one obtains an air cushion, in addition to the shirred elongated areas to a very voluminous front or front Back wall contributes. It has proved to be advantageous if the shirred areas 8 exclusively in the direction of the inner layer 1, ie the depressions point to the inner layer, and not in the direction of the outer layer 4 are formed. Of course it is possible, as for example in FIG. 3 shown a firmer film composite thereby obtained that welding areas or points 18 also between the outer layer 4 and the intermediate layer 2 attaches, for example in the region of the shirred elongated areas eighth

FIG. 4 shows a further advantageous embodiment of a three-layer composite film of front and rear walls, in which the inner as well as the outer layer 1, 4 are again formed relatively smooth surface. The intermediate layer 2 has folded regions 8, which can be arranged in the same way as for the embodiment according to FIG FIG. 2 described. In these folded areas 8, the otherwise smooth-surfaced structure of the intermediate layer 2 forming plastic film web is disturbed. The fold can be considered as substantially Z-shaped when viewed in cross-section. Also in this embodiment, it has proven to be advantageous to make the connection of the intermediate layer 2 via thermoplastic welding areas or points 10 with the inner layer 1. Also in this embodiment gives a very voluminous front or rear wall.

FIG. 5 shows a modification of the bag according to FIG. 1 , The bag 100 according to FIG. 5 is provided with a rear wall 104 which is longer than the front wall 102 and protrudes beyond the upper edge 114 of the front wall 102. In this way you get a Umklapplasche 128, as is often used in shipping bags. Conveniently, extends to the inner layer of the rear wall 104, an adhesive strip 130. This is usually provided with a removable protective layer, which is removed before closing by folding the Umklapplasche. In this way, the bag 1 00 according to FIG. 4 close in a simple way.

Surprisingly, it has been found that one arrives with very simple means and over a limited number of process steps to a bag which, although ultimately formed of very thin and extremely flexible plastic film layers, is very voluminous and upholstery and beyond a sufficient degree of inherent rigidity features. It is furthermore of particular advantage that the pouches and pouches according to the invention can be obtained in a form which makes it possible to greatly reduce intrinsic volumes if required, without the upholstery properties being lost in the generic use as a shipping pouch. In this case, the pockets or bags according to the invention come out even without closed or sealed air cushions. Due to the use of an intermediate layer containing a plurality of gathered or folded strip-shaped elongate regions, the welds can be performed in a manner that the passage or exchange of air between the sections formed by these welds or lines is still possible. Also, the specific configuration of the at least three-layer composite film allows the welds at the upper edges, into which the gathered elongated regions preferably open, not to seal the film composite, but nevertheless to ensure the passage of air while ensuring sufficient cohesion of the film layers. However, can be ensured by the welds at or spaced from the upper edges, which intersect the folded or gathered elongated strip-shaped areas, that the first, second and third layers of front and rear walls are firmly and permanently connected to each other, so not to It is feared that shipping material can get into these spaces or that components of sorting systems could intervene in these spaces.

The features of the invention disclosed in the preceding description, the claims and the drawings may be advantageous both individually and in any combination for the realization of the invention.

Claims (22)

1. A plastic pouch or bag comprising a front wall, a rear wall, an opening and a bottom as well as, if applicable, opposite side walls, wherein the front wall and/or the rear wall have at least three layers,
   wherein the at least three-layered front wall and/or the at least three-layered rear wall comprise one first layer (inner layer), at least one second layer (intermediate layer), and one third layer (outer layer),
   wherein the first layer faces the inside of the pouch or bag in relation to the second layer and/or forms the inner side of said pouch or bag,
   wherein the at least one second layer is arranged between the first and the third layer and comprises or consists of a plastic film, in particular polyolefin film, wherein the third layer faces the outside of the pouch or bag in relation to the second layer and/or forms the outer side of said pouch or bag,
   wherein the at least one second layer comprises a plurality of riffled or folded strip-shaped elongated areas, in particular strips, running at a distance from each other, and wherein the at least one second layer is connected to the first and/or the third layer by means of welded and/or glued seams which run transversely, in particular essentially orthogonally, to the riffled or folded strip-shaped elongated areas.
2. The plastic pouch or bag according to Claim 1, characterized in that the first layer (inner layer) of the front and/or rear wall, in particular the first and the second layer of the front and/or rear wall, respectively comprise or consist of at least one plastic film, in particular polyolefin film, and/or that the third layer (outer layer) of the front and/or rear wall comprises or consists of at least one plastic film, in particular polyolefin film.
3. The plastic pouch or bag according to Claim 1 or 2, characterized in that the front wall and the rear wall have at least three layers, and respectively comprise the first, second, and third layer, wherein in particular the first and the second layer and, if applicable, also the third layer of the front or rear wall respectively comprise or consist of at least one plastic film, in particular polyolefin film.
4. The plastic pouch or bag according to any one of the preceding claims, characterized in that
   in profile, the riffled strip-shaped elongated areas are, in particular essentially groove-shaped, protrusions, comprising an opening and a depression, of regions of the second layer, or that, in profile, the folded strip-shaped elongated areas are essentially Z-shaped folds of regions of the second layer.
5. The plastic pouch or bag according to Claim 4, characterized in that the depression of the protrusions of the riffled strip-shaped elongated areas faces towards the first layer, and that the opening of the riffled strip-shaped elongated areas faces towards the third layer.
6. The plastic pouch or bag according to any one of the preceding claims, characterized in that
   the bottom is formed by a seam or a fold of the first layers of the front wall and the rear wall, in particular by at least two layers selected from the first, second, and third layer, or that the at least three-layered front wall and the at least three-layered rear wall are essentially formed as a single piece, wherein in the transition from the front wall to the rear wall a fold which has been created by folding in the area of the bottom is present, and/or that the bottom comprises a bottom fold.
7. The plastic pouch or bag according to any one of the preceding claims, characterized in that
   the at least one second layer is connected to the first layer by means of the transversely running welded and/or glued seams, and/or that the second layer is not connected to the third layer by means of the transversely running welded and/or glued seams.
8. The plastic pouch or bag according to any one of the preceding claims, characterized in that the
   transversely running welded or glued seams are formed continuously or discontinuously, in particular discontinuously, and/or that the transversely running welded or glued seams are formed by a row of welded or glued regions, in particular weld points, at a distance from each other, which are preferably at essentially the same distance from each other as the riffled or folded strip-shaped elongated areas.
9. The plastic pouch or bag according to any one of the preceding claims, characterized in that
   the transversely running glued or welded seams do not close, or do not fully close, the sections of the first and second layer and/or of the second and third layer between adjacent riffled or folded strip-shaped elongated areas along said glued or welded seams, and/or that the transversely running welded or glued seams are formed by a row of weld or adhesion points at a distance from each other, which are respectively present in the crossover area of riffled or folded strip-shaped elongated areas and welded or glued seams running transversely hereto.
10. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the transversely running glued or welded seams run essentially parallel to each other and/or the riffled or folded strip-shaped elongated areas run essentially parallel to each other.
11. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    said pouch or bag comprises at least 5, in particular at least 15, riffled or folded strip-shaped elongated areas and/or that said pouch or bag comprises at least 5, in particular at least 10, transversely running glued or welded seams.
12. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the riffled or folded strip-shaped elongated areas extend in the direction from the opening to the bottom, in particular from the opening to the bottom, and/or that the riffled or folded strip-shaped elongated areas run essentially parallel to at least one side edge, in particular both side edges, of the front and/or rear wall.
13. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the at least three-layered rear wall or only the third layer (outer layer) of the at least three-layered rear wall protrudes over the front wall in the area of the opening.
14. The plastic pouch or bag according to Claim 13, characterized in that the section of the at least three-layered rear wall which protrudes over the front wall or the section of the outer layer which protrudes over the front wall comprises, on the side facing away from the outer side of the plastic pouch or plastic bag, at least one adhesive strip which extends in particular from the first side edge to the opposite second side edge.
15. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the first, second, and third layer are connected to each other along the side edges or at a distance from the side edges of the front and/or rear wall and/or along the upper edge or at a distance from the upper edge and/or along the bottom or at a distance from the bottom of the front and/or rear wall by way of at least one, in particular continuous, welded or glued seam.
16. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the second layer is connected to the third layer solely via the welded and/or glued seam along or at a distance from the upper edge of the front and/or rear wall, in particular the front and rear wall, and to the first layer by way of the welded and/or glued seams along or at a distance from the side edges of the front and/or rear wall, in particular the front and the rear wall.
17. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the at least one second layer is connected to the first layer, comprising or consisting of a plastic film, by way of the discontinuous transversely running welded or glued seams, that the second layer is connected to the third layer, comprising or consisting of a plastic film, solely via the, in particular continuous, welded or glued seam along or at a distance from the upper edge of the front and rear wall, and to the first layer by way of the, in particular continuous, welded or glued seams along or at a distance from the side edges of the front and rear wall, that the front wall and the rear wall are essentially formed as a single piece, wherein, in the transition from the front wall to the rear wall in the area of the bottom, a fold created by folding or a bottom fold is present, and that the riffled or folded strip-shaped elongated areas essentially extend from the opening to the bottom, wherein the, in particular continuous, welded or glued seam crosses the riffled or folded strip-shaped elongated areas along or at a distance from the upper edge of the front and rear wall, in particular without fully closing these areas against penetration by air.
18. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    the welded seams are thermoplastic welded seams.
19. The plastic bag according to any one of the preceding claims, characterized in that
    the first and/or third layer, in particular the first and the third layer, are formed with a smooth surface.
20. The plastic bag according to any one of the preceding claims, characterized in that
    said bag comprises at least one carrier loop or at least one carrier hole.
21. The plastic pouch or bag according to any one of the preceding claims, characterized in that
    said pouch or bag is an online shipping pouch or an online shipping bag.
22. Use of the plastic pouch or plastic bag according to any one of the preceding claims for transporting shipping goods, in particular shipping goods for online trading.

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