EP3882171A1 - Plastic shipping bag and use of the plastic shipping bag - Google Patents

Abstract

The present invention relates to a plastic mailing bag with a closing flap "protruding beyond the front wall", the outside of the front wall can be folded and which, in particular essentially in the middle, has a passage opening, set up and designed for the passage of a holding loop or a handle from the front wall and / or rear wall , wherein the closing flap has at least one fastening means between the opening edge of the rear wall and the passage opening, set up and designed to close the opening end after the closing flap has been folded down onto the outside of the front wall. especially chilled, foods.

Description

The present invention relates to a plastic shipping bag and its use for shipping, in particular chilled, food.

Mailers and mailers have been manufactured and used for a long time in a variety of forms and from a wide variety of materials. Unlike conventional carrier bags and packaging bags, mailing bags and mailing bags often have to meet special requirements for packaging, transport and delivery in order to guarantee smooth and complication-free handling at all times. The transport on treadmills or conveyor belts also has to function properly on a regular basis. Special requirements and special care must be placed on those mailing bags which, due to the more sensitive goods to be stored and transported with them, have a more complex structure. So far there has been no lack of attempts to find suitable solutions for specific tasks. Nonetheless, mailing bags, especially those that are equipped with carrying handles, still leave something to be desired.

The present invention was therefore based on the object of making shipping bags available which no longer suffer from the disadvantages of the prior art and which are particularly easy to manufacture and easy to use, nevertheless, even if they are equipped with straps or handles, a safe and ensure reliable transport of sensitive or high-quality goods, in particular food.

Accordingly, a plastic mailer with a closed or substantially closed bottom end and an opposite opening end has been found, comprising a front wall with an inside and an outside and a rear wall with an inside and an outside, each with a first side edge and an opposite second side edge and an opening edge and a bottom edge, wherein the front wall and the rear wall are connected to one another in the area of their first and second side edges and their bottom edges, at least in sections, directly or via side walls and / or side gussets and / or a bottom gusset, the front wall and possibly the rear wall, in particular the front and rear wall , and optionally the side walls, at least in sections, in particular in the area from the bottom edge to the opening end, multi-layer, in particular double, three, four or five layers, comprising an inner layer and an outer layer and optionally at least one intermediate layer , as well as at least one handle or loop attached to the opening edge, the inside or the outside, in particular the inside, of the front wall and / or at least one handle or loop attached to the inside of the rear wall on or below the opening edge, the front wall having a first length e, which corresponds to the mean distance between the opening edge and the bottom edge of the front wall and wherein the rear wall has a second length which corresponds to the mean distance between the opening edge and the bottom edge of the rear wall, the first length being shorter than the second length, so that the rear wall at the opening end protrudes over the front wall and this section protruding over the front wall (also called "locking tab") can be folded onto the outside of the front wall, the locking tab, in particular essentially in the center, having a passage opening, in particular a grip or punched hole or an opening slot , has, set up and designed for the passage of the holding loop or the handle from the front wall and / or rear wall, in particular from the front and rear wall, and wherein the closure flap has at least one fastening means between the opening edge of the rear wall and the passage opening, set up and designed to after this Fold down the locking flap on the outside of the front wall to close the opening end. With these plastic mailing bags according to the invention, food can be transported safely and reliably, also via a shipping service or a shipping company, without their quality or freshness being impaired. In addition, it can be ensured with the plastic mailing bags according to the invention that transported food is protected from contamination and that the recipient recognizes whether unauthorized access to the transported goods could have occurred.

In an expedient embodiment it can be provided that the front wall and the rear wall only in the area close to the floor, for example in their respective lower third, in particular including the floor area, e.g. the floor fold, at least three, are designed with four or five layers. The sections of the front and rear walls that adjoin these sections can then be designed, for example, with two layers.

In one embodiment, the closure flap can represent a separate single or multi-layer, in particular double-layer, film layer that is connected, for example glued or welded, to the outer layer and / or the inner layer, in particular the outer layer, of the rear wall. The closure flap is preferably an integral part of the outer layer of the rear wall and is accordingly in one piece with it. In a particularly preferred embodiment, the closure flap is double-layered and is expediently formed by folding over the portion of the outer layer of the rear wall protruding beyond the opening edge of the front side onto itself, preferably with the formation of a fold at the turning point. This embodiment saves material and at the same time provides a very stable, securely closable bag.

In an advantageous embodiment of the plastic mailing bag according to the invention, it is provided that the closure flap has at least one first weakening zone in that section which is opposite the opening edge of the closure flap with respect to the fastening means, which is spaced from or from the first side edge in the direction of or up to second side edge and which preferably extends from the first side edge to the second side edge. This first zone of weakness can be a line of perforations, for example. In the context of the invention, a first weakened zone or perforation line is still present in the closure flap if it runs in the area or at the level of the opening edge of the front wall, in particular essentially congruent with the course of the opening edge of the front wall. In an expedient embodiment of the plastic mailing bag according to the invention it is provided that the closure flap has at least one first weakening zone in that section which is opposite the fastening means in relation to the passage opening, which is spaced from or from the first side edge in the direction of or up to extends second side edge and which extends in particular from the first side edge to the second side edge. In a particularly advantageous embodiment it is provided that the first weakening zone, in particular the perforation line, extends in a first section from or at a distance from the first side edge in the direction of or up to the opening, preferably from the first side edge up to the opening, and in a second Section of or at a distance from the passage opening in the direction of or up to the second side edge, preferably from the passage opening to the second side edge. In this embodiment consequently, the passage opening is part of the first weakened zone. In other words, in this embodiment, the first weakened zone is divided into two sections, the first section of the first weakening zone extending at a distance from or from the first side edge in the direction of or up to the section of the passage opening adjacent thereto and the second section extending from the first Weakening zone at a distance from or extending from the second side edge in the direction of or up to the section of the passage opening adjacent thereto. A passage opening in the context of the present invention is to be understood as an opening, including a slot, through which the holding loop or the handle of the front wall and / or rear wall, in particular the front and rear wall, can be passed.

In the embodiment described above, the first weakening zone is preferably designed in such a way that it has the shortest possible extension in the first section from the first side edge to the passage opening and / or, preferably and that it has the shortest possible extension in the second section occupies from the passage opening to the second side edge. In a further expedient embodiment, this first weakening zone, in particular the perforation line, runs in the closure flap essentially at the level or essentially parallel to the opening edge of the front wall or, in particular up to 2.5 or up to 1.5 cm, in the direction of the The opening edge of the closure flap is spaced therefrom.

For many applications it has proven to be particularly expedient that the plastic mailing bag according to the invention is equipped in one embodiment with a closure flap which has at least one second weakened zone, in particular a perforation line, in the section that extends from the passage opening to the fastening means, which extends at a distance from or from the first side edge, preferably from the first side edge, in the direction of or up to the second side edge, preferably up to the second side edge. The second zone of weakness lies closer to the fastening means than the first zone of weakness. The first and second weakening zones preferably run essentially parallel to one another.

In an expedient embodiment of the plastic mailing bag according to the invention, it is provided that the closure flap in that section that extends between the passage opening and the fastening means has at least one second weakening zone that is spaced from or from the first side edge in the direction of or up to the second Side edge extends and which extends in particular from the first page margin extends to the second page margin. In a particularly advantageous embodiment it is provided that the second weakening zone, in particular the perforation line, extends in a first section from or at a distance from the first side edge in the direction of or up to the opening, preferably from the first side edge up to the opening, and in a second Section of or at a distance from the passage opening in the direction of or up to the second side edge, preferably from the passage opening to the second side edge. In this embodiment, the passage opening is consequently part of the second weakened zone. In other words, in this embodiment the second weakened zone is divided into two sections, the first section of the second weakening zone extending at a distance from or from the first side edge in the direction of or up to the section of the passage opening adjacent thereto and the second section extending from the second Weakening zone at a distance from or extending from the second side edge in the direction of or up to the section of the passage opening adjacent thereto.

In the embodiment described above, the second weakening zone is preferably designed in such a way that it has the shortest possible extension in the first section from the first side edge to the passage opening and / or, preferably and that it has the shortest possible extension in the second section occupies from the passage opening to the second side edge.

The passage opening in the closure flap is preferably designed as a grip hole or punched hole or as an opening slot. The passage opening is preferably arranged and aligned in the closing flap in such a way that the first handle or the first holding loop and / or the second handle or the second holding loop is locked through this opening when the closing flap is turned over or folded over on the outside of the front wall the opening end of the plastic mailer can be passed through. If the closure tab is multilayered, in particular double-layered, the circumferential edge of the grip or punched hole or of the opening slit can be partially or completely welded or glued.

In the case of the plastic mailing bags according to the invention, the front wall and at the same time also the rear wall are particularly preferably designed with two layers.

The at least one fastening means present between the opening edge and the passage opening preferably represents an adhesive area or in particular an adhesive strip. This adhesive area or this adhesive strip can be used in an expedient configuration be covered with a removable protective layer, for example in the form of siliconized paper. If you want to close the plastic shipping bag, this protective layer must be removed before the closing flap containing the adhesive area or the adhesive strip is folded over onto the outside of the front wall and the closing flap forms an adhesive connection with this outside of the front wall, closing the openings of the front wall.

The inner layer of the front and / or rear wall, in particular the front and rear wall, of the plastic mailing bag according to the invention expediently comprises or represents a foamed plastic film or air cushion plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film For many applications it has proven to be advantageous to use a foamed plastic film with closed pores when using a foamed plastic film.

Especially when using at least one intermediate layer in the front and / or rear wall, this can be designed as a, in particular closed-pore, foamed plastic film or as an air cushion plastic film. A foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film, is preferably used here.

In a particularly preferred embodiment variant, the outer layer of the front and / or rear wall, in particular of the front and rear wall, does not include any air cushion plastic film, also no foamed plastic film, preferably no foamed polyolefin film, particularly preferably no foamed polyethylene film and in particular no foamed low-density polyethylene film, and also does not represent one. In a further particularly preferred embodiment variant, the outer layer of the front and / or rear wall, in particular of the front and rear wall, comprises or represents a plastic film, preferably a polyolefin film, particularly preferably a polyethylene film and in particular a low-density polyethylene film one such.

The plastic mailer according to the invention does not have side walls or gussets for many uses.

The handles of the plastic mailing bags according to the invention preferably contain HD polyethylene or are formed. A particularly preferred material for the inner and outer layers of the front and rear walls is made of low-density polyethylene resorted to. This regularly ensures that the handles are reliably welded to the front or rear wall.

Such plastic mailing bags according to the invention have proven to be particularly expedient in which the handle of the front wall and the handle of the rear wall form a pair of handles that can be reversibly connected to one another. In many cases it has proven to be particularly useful for the bag according to the invention to connect the handle of the front wall to a welded strip. The handle or the holding loop of the front wall, in particular the weld-on strip of the handle of the front wall, is expediently welded to the inside of the front wall, in particular to the folded-over continuation edge section, particularly preferably in the overlapping section of the inner layer and continuation edge section and optionally the at least one intermediate layer. Alternatively and preferably in addition, the handle of the rear wall is also connected to a welded strip. In particular, the handles of the front wall and rear wall are each in one piece with the corresponding weld-on strip. The handle or the holding loop of the rear wall, in particular the weld-on strip of the handle of the rear wall, is preferred with the inside of the rear wall, in particular with the folded-over continuation edge section, particularly preferably with the overlapping section of the inner layer with the folded-over continuation edge section and optionally the at least one intermediate layer, welded.

The welding of the handle or the holding loop of the front wall preferably extends in the overlapping section as far as the outer layer of the front wall. Alternatively, and in particular in addition, it can be provided that the welding of the handle or the holding loop of the rear wall in the overlapping section extends as far as the outer position of the rear wall.

The welding strips of the plastic mailing bags according to the invention preferably contain HD polyethylene or are formed from it. It is particularly preferred to use low-density polyethylene as the material for the inner and outer layers of the front and rear walls at the same time. As a result, reliable welding of the welding strips to the front or rear wall is regularly achieved. For many applications it has proven to be expedient to dimension the width of the weld-on strips smaller than the width of the front or rear wall. In this way, the weld-on strips can be connected particularly conveniently and reliably to the inner layer of the front or rear wall.

The object on which the invention is based is also achieved particularly reliably with such plastic mailing bags according to the invention in which the outer layer of the layer forming the front wall has a continuation edge section in the area of the opening edge, which is turned over to the outside of the inner layer of the front wall and with this inner layer an overlapping section forms, wherein the continuation edge section and the inner layer are connected to one another, in particular welded, in the overlapping section. The area in which the connection or welding of the aforementioned layers is present within this overlapping section is also called the “first connection area”. In one embodiment which solves the problem on which the invention is based particularly satisfactorily, the continuation edge section, the inner layer and the outer layer or the continuation edge section, the inner layer, the at least one intermediate layer and the outer layer are connected to one another, in particular in this first connecting area welded. The folded-over continuation edge section of the front wall preferably overlaps substantially completely with the inner layer of the front wall. The weld of adjacent layers is preferably designed to overlap, i.e. the weld extends in a uniform area through all the layers present in this area. In addition, it is also possible for the inner layer and the at least one intermediate layer or the at least one intermediate layer and the outer layer to be connected to one another, in particular welded, in the overlapping section.

In a further advantageous embodiment, alternatively or in particular in addition to the variant described above, it can be provided that the layer forming the outer layer of the rear wall has a continuation edge section in the area of the opening edge, which is turned over to the outside of the inner layer of the rear wall and an overlapping one with this inner layer Section forms, this continuation edge section and the inner layer and in particular also the inner layer and the outer layer and optionally the inner layer and the at least one intermediate layer and the at least one intermediate layer and the outer layer are connected to one another, in particular welded, in the overlapping section. The area in which the connection or welding of the aforementioned layers is present within this overlapping section is also called the “second connection area”.

As an alternative and in particular in addition, the layer forming the outer layer of the rear wall has a continuation edge section in the area of the opening edge, which is turned over onto the outside of the inner layer of the rear wall and with this inner layer forms an overlapping section, the continuation edge section and the inner layer being connected to one another, in particular welded, in the overlapping section. The folded-over continuation edge section of the rear wall preferably has no overlap with the inner layer of the rear wall in the area of the passage opening of the closure tabs.

In the case of the plastic shipping bags according to the invention described above, in which the outer layer of the layer forming the front wall has a continuation edge section in the area of the opening edge and / or in which the layer forming the outer layer of the rear wall has a continuation edge section in the area of the opening edge, the extent of the is correct when used in accordance with the generic type Inner layer of the front wall in the direction of the opening end and the extension of the inner layer of the rear wall in the direction of the opening end preferably essentially coincide.

In particularly suitable embodiments, the handle or the holding loop of the front wall, in particular the weld-on strip of the handle of the front wall, is connected, in particular welded, to the area of the inside of the front wall in a connecting area that is formed by that section of the folded-over continuation edge section that does not overlap of the inner layer, in particular an overlap exclusively with the outer layer of the front wall (also called "third connecting area"). Alternatively or additionally, it can be provided that the handle or the loop of the rear wall, in particular the welded strip of the handle of the rear wall, is connected, in particular welded, to the area of the inside of the rear wall in a connection area which is formed by that section of the folded-over continuation edge section which has no overlap with the inner layer, in particular an overlap exclusively with the outer layer of the rear wall (also called "fourth connection area").

In order to achieve very good mechanical stability, the first and third connection areas are particularly preferably separate from one another. The second and fourth connection areas are preferably also separate from one another.

With the plastic mailing bags according to the invention, surprisingly, the dispatch of, in particular chilled, foodstuffs succeeds perfectly and without complications.

Figur 1

eine schematische perspektivische Draufsicht auf eine erste Ausführungs-form einer erfindungsgemäßen Kunststoffversandtasche ohne Perforations-linie im offenen Zustand;

Figur 2

eine schematische Draufsicht auf die Vorderseite der erfindungsgemäßen Kunststoffversandtasche gemäß Figur 1 im verschlossenen Zustand;

Figur 3

eine schematische Querschnittsansicht der erfindungsgemäßen Kunst-stoffversandtasche gemäß Figur 1 im offenen Zustand;

Figur 4

eine schematische perspektivische Draufsicht auf eine zweite Ausführungs-form einer erfindungsgemäßen Kunststoffversandtasche mit einer Perforati-onslinie im offenen Zustand;

Figur 5

eine schematische Draufsicht auf die Vorderseite der erfindungsgemäßen Kunststoffversandtasche gemäß Figur 4 im verschlossenen Zustand;

Figur 6

eine schematische Querschnittsansicht der erfindungsgemäßen Kunst-stoffversandtasche gemäß Figur 4 im offenen Zustand;

Figur 7

eine schematische perspektivische Draufsicht auf eine Abwandlung einer erfindungsgemäßen Kunststoffversandtasche mit einer Perforationslinie im offenen Zustand;

Figur 8

eine schematische Draufsicht auf die Vorderseite der erfindungsgemäßen Kunststoffversandtasche gemäß Figur 7 im verschlossenen Zustand;

Figur 9

eine schematische Querschnittsansicht der erfindungsgemäßen Kunst-stoffversandtasche gemäß Figur 7 im offenen Zustand;

Figur 10

eine schematische perspektivische Draufsicht auf eine dritte Ausführungs-form einer erfindungsgemäßen Kunststoffversandtasche mit zwei Perforati-onslinien im offenen Zustand;

Figur 11

eine schematische Draufsicht auf die Vorderseite der erfindungsgemäßen Kunststoffversandtasche gemäß Figur 10 im verschlossenen Zustand;

Figur 12

eine schematische Querschnittsansicht der erfindungsgemäßen Kunst-stoffversandtasche gemäß Figur 10 im offenen Zustand;

Figur 13

eine schematische perspektivische Draufsicht auf eine Abwandlung einer erfindungsgemäßen Kunststoffversandtasche mit zwei Perforationslinien im offenen Zustand;

Figur 14

eine schematische Draufsicht auf die Vorderseite der erfindungsgemäßen Kunststoffversandtasche gemäß Figur 13 im verschlossenen Zustand,

Figur 15

eine schematische Querschnittsansicht der erfindungsgemäßen Kunst-stoffversandtasche gemäß Figur 13 im offenen Zustand,

Figur 16

eine schematische Querschnittsansicht einer weiteren Abwandlung einer erfindungsgemäßen Kunststoffversandtasche,

Figur 17

eine schematische Querschnittsansicht einer weiteren Abwandlung einer erfindungsgemäßen Kunststoffversandtasche und

Figur 18

eine schematische Querschnittsansicht einer weiteren Abwandlung einer erfindungsgemäßen Kunststoffversandtasche.

Further features and advantages of the invention emerge from the following description of an exemplary embodiment of the invention on the basis of a schematic drawing, without thereby limiting the invention. Show:

Figure 1

a schematic perspective top view of a first embodiment of a plastic mailing bag according to the invention without a perforation line in the open state;

Figure 2

a schematic plan view of the front of the plastic mailer according to the invention according to Figure 1 when closed;

Figure 3

a schematic cross-sectional view of the plastic mailer according to the invention according to Figure 1 in the open state;

Figure 4

a schematic perspective top view of a second embodiment of a plastic mailing bag according to the invention with a perforation line in the open state;

Figure 5

a schematic plan view of the front of the plastic mailer according to the invention according to Figure 4 when closed;

Figure 6

a schematic cross-sectional view of the plastic mailer according to the invention according to Figure 4 in the open state;

Figure 7

a schematic perspective top view of a modification of a plastic mailing bag according to the invention with a perforation line in the open state;

Figure 8

a schematic plan view of the front of the plastic mailer according to the invention according to Figure 7 when closed;

Figure 9

a schematic cross-sectional view of the plastic mailer according to the invention according to Figure 7 in the open state;

Figure 10

a schematic perspective top view of a third embodiment of a plastic mailing bag according to the invention with two perforation lines in the open state;

Figure 11

a schematic plan view of the front of the plastic mailer according to the invention according to Figure 10 when closed;

Figure 12

a schematic cross-sectional view of the plastic mailer according to the invention according to Figure 10 in the open state;

Figure 13

a schematic perspective top view of a modification of a plastic mailing bag according to the invention with two perforation lines in the open state;

Figure 14

a schematic plan view of the front of the plastic mailer according to the invention according to Figure 13 when closed,

Figure 15

a schematic cross-sectional view of the plastic mailer according to the invention according to Figure 13 in the open state,

Figure 16

a schematic cross-sectional view of a further modification of a plastic mailing bag according to the invention,

Figure 17

a schematic cross-sectional view of a further modification of a plastic mailing bag according to the invention and

Figure 18

a schematic cross-sectional view of a further modification of a plastic mailing bag according to the invention.

Figure 1 shows a schematic perspective top view of a plastic mailing bag 1 according to the invention with a closed bottom end 2 and an opposite opening end 4. The plastic mailing bag 1 has a front wall 6 with an inside 8 and an outside 10 and a rear wall 12 with an inside 14 and an outside 16 The front wall 6 and the rear wall 12 are each equipped with a first side edge 18, 18 'and an opposing second side edge 20, 20' as well as an opening edge 22, 22 'and a bottom edge 24, 24'. In the embodiment shown, the front wall 6 and the rear wall 12 are connected to one another in the region of their first and second side edges 18, 18 ′ and 20, 20 ′ and via a bottom fold 26. In the embodiment variant shown, the front wall 6 and the rear wall 12 are designed with two layers, each comprising a foamed (not shown) inner layer 28, 28 'and a single-layer, non-foamed outer layer 30, 30'. In the case of plastic shipping see 1 according to Figure 1 there is a handle 32 on the inside in the area of the opening edge 22 of the front wall 6. In the embodiment shown, the handle 32 is integrally connected to a weld-on strip 40, which in turn is located on the outside of the inwardly folded outer layer of the front wall of the plastic shipping container according to the invention 1 is applied and is welded to this. Correspondingly, in the area of the opening edge 22 'of the rear wall 12, there is a second handle 34 integrally connected to a welded strip 42 on the inside, the welded bar 42 also being welded to the rear wall via the outside of the inwardly folded outer layer. The front wall 6 has a length which is shorter than the length of the rear wall 12. Accordingly, the rear wall 12 protrudes beyond the front wall 6 at the opening end 4. This section 36 protruding beyond the front wall 6 (also called “closure flap”) can be folded over onto the outside of the front wall 6 and in this way close the opening end 4. In the embodiment shown, this closure tab 36 is located essentially centrally above a passage opening 38 (see also FIG Figure 2 ). The handles 32 and 34 of the front 6 and rear wall 12 can be passed through this passage opening 38. The closure flap 36 of the plastic mailing bag 1 according to FIG Figure 1 furthermore has at least one fastening means in the form of an adhesive strip 48 between the opening edge 22, 22 ′ and the passage opening 38. After the closing flap 36 has been folded over onto the outside of the front wall 6, the opening end 4 can be closed in this way, which already enables safe and reliable transport.

Figure 2 shows the already described plastic mailing bag 1 according to the invention in the closed state in a side view of the front wall 6. The handle 32 of the front wall 6 and the handle 34 of the rear wall 12 are connected to one another. The closure flap 36 is folded over onto the front wall 6. The closure flap 36 can be fastened to the front wall 6 with the aid of the fastening means in the form of the adhesive strip 48, the connected handles 32 and 34 being pushed through the through-opening 38.

Figure 3 shows a cross-sectional view of the plastic mailing bag 1 already described in the open state. Figure 3 shows that both the front wall 6 and the rear wall 12 are provided with an inner side 8, 14 and an outer side 10, 16 and, in the embodiment shown, these are each designed in two layers with an inner layer 28, 28 'and an outer layer 30, 30' . The welding strips 40 and 42 are welded to the outer layer 30 of the front wall 6 which is turned over to the inside at the opening end or to the outer layer 30 'of the rear wall 12 which is turned inward at the opening end and forms the closure flap. and rear wall are accordingly on the inside in the case of the illustrated mailer according to the invention.

For the plastic mailer according to Figure 3 the inner layer 28 'of the rear wall 12 extends into the lower region of the closure flap 36, whereby an overlapping area is formed. In this overlapping area, the inwardly folded outer layer 30 'of the rear wall 12, which forms the closure flap, the inner layer 28' of the rear wall 12 and the outer layer 30 'which is not folded inward and is located on the outside are adjacent to the rear wall 12. In the embodiment shown, the three above-mentioned overlapping layers are completely welded to one another in sections in this overlapping area. As in Figure 3 shown, the upper end of the inner layer 28 'end above the weld area. The handle 34 of the rear wall 12 is welded to the rear wall 12 on the inside above this welded area and also above the named upper end of the inner layer 28 ′. Accordingly, in the embodiment shown, the welding areas described above do not overlap, but are separated from one another. The embodiment of a plastic mailer 1 according to the invention Figure 3 is further characterized in that the front wall 6 is provided with a corresponding overlap area in which the inner layer 28 of the front wall 6, the outer layer 30 of the front wall 6 on the outside and the outer layer 30 of the front wall 6 turned inward at the opening end 4 are welded to one another . Here, in the embodiment shown, the inner layer 28 again does not extend into the area in which the handle 32 of the front wall 6 is welded to the front wall 6 on the inside. The aforementioned welding areas on the front side are also separated from one another. In the Figure 3 The illustrated embodiment of a plastic mailing bag 1 according to the invention is characterized by a particularly pronounced stability with the least possible material expenditure. It can also be used to transport large loads over a longer period of time without complications.

The second embodiment of the plastic mailer 1 according to the invention in Figure 4 shows in comparison to the plastic mailer 1 according to Figure 1 a first weakened zone in the form of a perforation line 44 which runs parallel to the upper opening edge 22 ′ and is located centrally between the upper opening edge 22 ′ of the rear wall 12 and the passage opening 38. When closing the plastic mailer 1 according to the invention according to Figure 5 the closing flap 36 can be folded over the perforation line 44, this being fastened to the front wall 6 with the aid of an adhesive strip 48. Figure 6 shows the corresponding cross-sectional view of the in Figure 4 plastic mailer shown 1.

The alternative embodiment of the plastic mailer 1 according to the invention with a perforation line according to FIG Figure 7 differs from the plastic mailer according to Figure 4 that the first weakening zone in the form of a perforation line 44 extends in a first section from the first side edge 18 to the center of the nearest short side of the rectangular passage opening 38 and in a second section from the center of the opposite short side of the rectangular passage opening 38 to extends to the second side edge 18 '. the Figures 8 and 9 show the respective associated plastic mailer 1 according to Figure 7 in the closed state in side view or in cross-sectional view.

Figure 10 shows a third embodiment of the plastic mail order bag 1 according to the invention in a perspective top view. In addition to the features of the in Figure 4 The embodiment of the plastic mailer 1 shown has a further perforation line 46 on the rear wall 12, which is located between the passage opening 38 and the adhesive strip 48. The plastic mailing bag 1 according to the invention closed by means of the adhesive strip 48 can be opened by severing the first perforation line 44 or by severing the second perforation line 46 in order to remove the goods to be transported. The remaining section 50 can then be severed by severing the second perforation line 46 or the first perforation line 44. If a plastic mailing bag with only one perforation line is used, regardless of where it is arranged, ie on this side or on the other side of the passage opening 38, a section 50 connected to the bag would remain, either as an upwardly protruding section of the adhesive strip or as an upwardly protruding section of the rear wall , which could hinder the filling process if the opened plastic mailing bag is reused as a carrying or cooling bag. This protruding section, which is still connected to the bag body, could also increase the risk of damage to the bag. For example, the protruding section could get caught on other objects during handling and / or during transport or be pinched. In addition, an upwardly protruding section would result in an appearance that would be detrimental to reuse of the bag as a carrying or cooling bag. Alternatively, it is of course also possible to sever the first and the second perforation lines 44, 46 essentially simultaneously by pulling on the outer edge of the section 50 in order to remove it in one operation. By the design variant according to Figure 10 allows easy separation of the protruding portion 50, the reuse of the plastic mailing bag 1 is facilitated.

Figure 11 shows the plastic mailer 1 according to the invention according to Figure 10 in the locked state in a side view. After the plastic carrier bag 1 has been opened by severing the first perforation line 44, the section 50 that has become superfluous can be severed via the second perforation line 46. Figure 12 shows the corresponding cross-sectional view of the in Figure 10 already described plastic carrier bag 1.

The variant of the plastic mailer according to Figure 13 differs from the plastic mailer according to Figure 10 that therein the first zone of weakness in the form of a perforation line 44 extends in a first section from the first side edge to a first corner point of the rectangular passage opening, which is a greater distance from the fastening means than the second corner point, which is the first short corner point Side of the rectangular passage opening 38 spans, which is adjacent to the first side edge 18, and extends in a second section from the third corner point of the rectangular passage opening 38, which spans the first longer side of the rectangle with the first corner point, to the second side edge 18 ' , and that, moreover, the second weakened zone in the form of a perforation line 46 extends in a first section from the first side edge 18 to the second corner point of the rectangular passage opening 38 and in a second part section from the fourth corner point of the rectangular passage opening 38, de r spans the second shorter side of the rectangular passage opening 38 with the third corner point, extending to the second side edge 18 '. With this embodiment, it is particularly convenient and reliable to open the plastic mailing bag 1 according to the invention, which is closed by the fastening means 48, by pulling on the sections present between the first and second weakened zones 44 and 46, and at the same time to convert it into a state in which it can easily be reused as a carrying or cooling bag. the Figures 14 and 15th show the associated views in the closed state in a side view or in a cross-sectional view.

The plastic mailer according to the invention according to Figure 16 differs from the design variants of the preceding figures in that the inner layer 28 'of the rear wall 12 extends beyond the welded area of the handle. That is to say, the inner layer 28 'is fixed at the end of the opening via two consecutive welding areas. In the embodiment shown, the inner layer 28 of the front wall 6 is also fixed in a corresponding manner via two welded areas.

The plastic mailing bags according to Figures 17 and 18 thereby differ from the variant according to Figure 16 that the fixation of the inner layer by two adjacent welding areas only on the front side ( Figure 17 ) or only on the back ( Figure 18 ) is executed, ie the remaining inner layer of the rear or front wall is as in the embodiments of Figures 1 to 15 only fixed via a welded area

The features of the invention disclosed in the above description, in the claims and in the drawings can be essential both individually and in any combination for the implementation of the invention in its various embodiments.

Claims (17)

A plastic mailer with a closed or substantially closed bottom end and an opposite opening end, comprising a front wall with an inside and an outside and
a rear wall with an inside and an outside, each with a first side edge and an opposite second side edge as well as an opening edge and a bottom edge,
wherein the front wall and the rear wall are connected to one another in the area of their first and second side edges and their bottom edges, at least in sections, directly or via side walls and / or side gussets and / or a bottom area, in particular a bottom gusset,
wherein the front wall and optionally the rear wall and optionally the side walls is or are at least partially multi-layered, in particular double, three, four or five layers, comprising an inner layer and an outer layer and optionally at least one intermediate layer and at least one on the Opening edge, the inside or the outside, in particular the inside, the front wall attached handle or strap and / or
at least one handle or strap attached to the inside of the rear wall below the edge of the opening,
wherein the front wall has a first length which corresponds to the mean distance between the opening edge and the bottom edge of the front wall and wherein the rear wall has a second length which corresponds to the mean distance between the opening edge and the bottom edge of the rear wall, the first length being shorter than the second length , so that the rear wall protrudes at the opening end over the front wall and this section protruding over the front wall (also called "closure flap") can be folded onto the outside of the front wall,
wherein the closure flap, in particular essentially in the middle, has a passage opening, set up and designed for the passage of the holding loop or the handle from the front wall and / or rear wall, in particular the front and rear wall, and
wherein the closure flap between the opening edge of the rear wall and the passage opening has at least one fastening means, in particular in the form of at least one adhesive strip, set up and designed to be used according to the Folding the closure flap on the outside of the front wall to close the opening end, whereby
the closure flap has at least one first weakening zone in the section which lies opposite the fastening means in relation to the passage opening, which zone extends at a distance from or from the first side edge in the direction of or up to the second side edge, and wherein
the closure flap has at least one second weakened zone in the section which extends from the passage opening to the fastening means, which zone extends at a distance from or from the first side edge in the direction of or up to the second side edge. Plastic mailer according to claim 1, characterized in that
the first zone of weakness comprises or represents at least one line of perforations. Plastic mailer according to claim 1 or 2, characterized in that the front wall and the rear wall are designed with double, three, four or five layers at least in sections, in particular in the area from the bottom edge to the opening end. Plastic mailer according to one of the preceding claims, characterized in that
the second zone of weakness represents a line of perforations. Plastic mailer according to one of the preceding claims, characterized in that
the inner layer of the front and / or rear wall comprises or represents a, in particular closed-cell, foamed plastic film or an air cushion plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film, and preferably the outer layer of the front and / or the rear wall does not represent or comprise an air cushion plastic film or a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and in particular a non-foamed low-density polyethylene film. Plastic mailer according to one of the preceding claims, characterized in that
the at least one intermediate layer of the front and / or rear wall comprises or represents a, in particular closed-pore, foamed plastic film or an air cushion plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film. Plastic mailer according to one of the preceding claims, characterized in that
the handle of the front wall, in particular formed from HD polyethylene, is connected to a, in particular formed from HD polyethylene, welded strip, in particular in one piece, and / or that the handle of the rear wall, in particular formed from HD polyethylene, with a, in particular from HD polyethylene formed, welded strip, in particular in one piece, is connected. Plastic mailer according to one of the preceding claims, that
the layer forming the outer layer of the front wall has a continuation edge section in the area of the opening edge, which is turned over onto the outside of the inner layer of the front wall and forms an overlapping section with this inner layer, the continuation edge section and the inner layer and in particular also the inner layer and the outer layer as well as possibly the inner layer and the at least one intermediate layer and the at least one intermediate layer and the outer layer in the overlapping section (also called "first connection area") are connected to one another, in particular welded, and / or that
the layer forming the outer layer of the rear wall has a continuation edge section in the area of the opening edge, which is turned over onto the outside of the inner layer of the rear wall and forms an overlapping section with this inner layer, this continuation edge section and the inner layer and in particular also the inner layer and the outer layer as well as possibly the inner layer and the at least one intermediate layer and the at least one intermediate layer and the outer layer are connected to one another, in particular welded, in the overlapping section (also called “second connection area”). Plastic mailer according to claim 8, characterized in that the turned over continuation edge section of the front wall essentially completely overlaps with the inner layer of the front wall and / or that the turned over continuation edge section of the rear wall does not overlap with the inner layer of the rear wall in the area of the passage opening of the closure tabs. Plastic mailer according to claim 8 or 9, characterized in that when used generically, the extension of the inner layer of the front wall in the direction of the opening end and the extension of the inner layer of the rear wall in the direction of the opening end essentially coincide. Plastic mailer according to one of the preceding claims, characterized in that
the handle or the holding loop of the front wall, in particular the weld-on strip of the handle of the front wall, is welded to the inside of the front wall, in particular with the turned-over continuation edge section, particularly preferably in the overlapping section of the inner layer and continuation edge section and optionally the at least one intermediate layer and / or that the handle or the retaining loop of the rear wall, in particular the weld-on strip of the handle of the rear wall, is welded to the inside of the rear wall, in particular with the folded extension edge section, particularly preferably with the overlapping section of the inner layer and the folded extension edge section and optionally the at least one intermediate layer . Plastic mailer according to one of the preceding claims, characterized in that
the handle or the holding loop of the front wall, in particular the weld-on strip of the handle of the front wall, is connected, in particular welded, to the area of the inside of the front wall in a third connection area which is formed by that section of the folded-over continuation edge section which does not overlap with the inner layer, in particular an overlap exclusively with the outer layer of the front wall, and / or that the handle or the loop of the rear wall, in particular the welded strip of the handle of the rear wall, is connected, in particular welded, to the area of the inside of the rear wall in a fourth connection area, which is formed by that section of the folded-over continuation edge section which does not overlap with the inner layer, in particular an overlap exclusively with the outer layer of the rear wall. Plastic mailing bag according to Claim 12, characterized in that the first and third connection areas are separate from one another and / or that the second and fourth connection areas are separate from one another. Plastic mailer according to one of Claims 11 to 13, characterized in that
the welding of the handle or the holding loop of the front wall in the overlapping section extends to the outer layer of the front wall and / or that
the welding of the handle or the holding loop of the rear wall in the overlapping section extends to the outer layer of the rear wall. Plastic mailer according to one of the preceding claims, characterized in that
the closing flap is an integral or separate single or multi-layer, in particular double-layer, film layer that is connected to the outer layer and / or the inner layer, in particular the outer layer, of the rear wall or is formed in one piece, or that the closing flap is an integral part of the outer layer of the rear wall and in particular has a double-layer design. Plastic mailer according to one of Claims 1 to 15, characterized in that
the first weakening zone, in particular the perforation line, extends in a first section from or at a distance from the first side edge in the direction of or up to the passage opening, preferably from the first side edge up to the passage opening, and in a second section from or at a distance from the passage opening in the direction of or to the second side edge, preferably from the passage opening to the second side edge, and / or that the second weakening zone, in particular the perforation line, extends in a first section from or at a distance from the first side edge in the direction of or up to the passage opening, preferably from the first side edge to the passage opening, and in a second section of or at a distance from the The passage opening extends in the direction of or up to the second side edge, preferably from the passage opening to the second side edge. Use of the plastic mailing bag according to one of the preceding claims for the shipping of, in particular chilled, food.

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