LU500072B1 - Padded shipping bag - Google Patents

Abstract

The invention relates to a padded shipping bag (1) for accommodating at least one item to be shipped. The mailing bag (1) has an opening (2) on at least one side for receiving the object and is formed from at least one outer material blank (3). A padding material layer (7) is arranged on an inner side (5) of an outer material layer (6) of the outer material blank (3) facing the interior (4) of the shipping bag (1). The padding material layer (7) is made of a paper foam (8). The invention also relates to a method for producing a padded shipping bag (1).

Description

- 1 - SNZ 2498 P LU LU500072 Bennet Siller and Yannick Zinner Padded shipping bag The invention relates to a padded shipping bag for receiving at least one item to be shipped, the shipping bag having an opening on at least one side for receiving the object, the shipping bag consisting of at least one Outer material blank is formed, a padding material layer being arranged on an inner side of an outer material layer of the outer material blank facing the interior of the mailing bag.

Mailing bags are known from the prior art, which consist of two sheets of paper lying essentially parallel to one another and lined on the inside with so-called bubble wrap or air chamber foil. The two sheets of paper usually have an additional coating on the inside with a plastic layer, for example made of polyethylene, and are welded to one another all around the edge, with the exception of a filling opening. Such mailing bags are known under the name air cushion mailing bags. They are used primarily to send items by post that are to be secured in particular against external shocks and damage. These bubble mailers can be used in an environmentally friendly manner by being reused by the recipient of the shipment.

- 2 - SNZ 2498 P LU LU500072 Nevertheless, such air cushion envelopes are only suitable for a limited maximum number of uses, so that after a certain period of use they have to be taken out of circulation and disposed of. Due to the fact that the paper layers and the air cushion layer are usually welded or glued to one another, material separation is difficult or impossible when the air cushion mailer is disposed of.

Environmentally friendly mailing bags made of corrugated cardboard are also known from the prior art. In the case of mailing bags of this type, only paper or cardboard and no plastic is used, so that mailing bags of this type can be recycled in a simple manner. The cushioning effect is achieved by the corrugated board structure introduced within the corrugated board section. A disadvantage of such mailing bags made of corrugated cardboard is that the corrugated cardboard sections are stiff parallel to the corrugated cardboard structure and have a low flexural rigidity perpendicularly to the corrugated cardboard structure. Furthermore, the cushioning effect of corrugated cardboard is low, so that a corrugated cardboard section consisting of several layers of corrugated cardboard would be necessary for a high cushioning effect, as a result of which the weight of the shipping bag is increased and the rigidity increases. In order to easily design the shipping bag with a view to cost-effective shipping, the shipping bags made of corrugated cardboard are usually made from only one layer of corrugated cardboard. In addition, a small cushioning effect is accepted.

Environmentally friendly padded shipping bags with a paper flour filling are also known from the prior art

- 3 - SNZ 2498 P LU LU500072 shredded paper.

In the case of mailing bags of this type, only shredded paper or cardboard and no plastic is used, so that mailing bags of this type can be recycled in a simple manner.

The cushioning effect is achieved by a layer of paper flour inside the outer pockets.

Disadvantages of such mailing bags with paper flour filling are the high weight of the dense filling and the low flexural rigidity.

The increased weight of the goods to be shipped or the mailing bag increases the shipping costs charged by the mail order company.

Also from the prior art are environmentally friendly padded shipping bags with a

Paper cushion mat filling known.

In the case of mailing bags of this type, only paper or cardboard and no plastic is used, so that mailing bags of this type can be recycled in a simple manner.

The padding effect is achieved by gaining volume through an accordion effect of a wire-mesh-like honeycomb pattern made from a corrugated cardboard blank arranged inside the outer pockets.

Disadvantages of such mailing bags are the high weight of the filling and the high production costs compared to air cushion mailing bags.

Furthermore, the

Padding effect of paper padding mats is low due to the required padding thickness, so that a corrugated cardboard section consisting of several layers of paper padding mats is necessary for a high padding effect, which increases the weight of the shipping bag.

The increased weight of the goods to be shipped or the mailing bag increases the shipping costs charged by the mail order company.

- 4 - SNZ 2498 P LU LU500072 Loose packaging material, such as Styrofoam chips, air cushions or air cushion foil or wood wool, is known for padding embroidery products within shipping containers. Filling material made from paper foam chips is also known. One advantage of paper foam chips is, among other things, the environmentally friendly production of the paper foam from recycled paper. Waste paper or cardboard is processed into a fiber mass and mixed with starch as the starting material. Within an extruder, this fiber mass is compressed and plasticized by introducing thermal and mechanical energy. When the plasticized fiber mass exits the extruder, it expands into a paper foam due to the drop in temperature and pressure. Depending on the shape of the extruder attachment and depending on the separation of the paper foam exiting the extruder, plate-shaped paper foam sections or paper foam chips are produced after the paper foam has dried and hardened.

These paper foam sections or paper foam chips have elastic, antistatic and pH-neutral properties and can be used free of dust and germs. The paper foam chips can be disposed of in an environmentally friendly way via the organic waste bin or the waste paper bin. Paper foam chips are mostly used as loose filling material within shipping packaging or boxes to embed the shipping item. In order to prevent direct contact between the shipping item and the paper foam chips, the shipping item is usually packed in plastic film or in another outer packaging. Although the outer packaging and the paper foam chips are separable from each other, however, an outer packaging is required

- 5 - SNZ 2498 P LU LU500072 plastic a more complex disposal than paper foam chips. It is considered the object of the present invention to provide an environmentally friendly and easily disposable padded mailing bag for mailing that has the best possible padding effect at a low weight.

According to the invention, this object is achieved in that the padding material layer is formed from a paper foam. Due to the elastic properties of the paper foam, a particularly good protection of the mailing object received in the mailing bag against impacts can take place. In order to increase the protection against impacts in a particularly advantageous manner, a thickness of the padding material layer can be changed along the outer material layer. For example, the padding material layer can be particularly thick in the areas adjacent to the object to be shipped. The padding material layer can be made thin in the edge areas of the mailing bag in order to keep the external volume of the mailing bag small both when the mailing bag is in storage and when the mailing bag is in operation or being shipped. In addition, a simple joining of the outer material layers is possible due to a thin padding material layer in the edge areas in order to produce a mailing bag.

According to the invention, a pressure-sensitive adhesive strip is provided in the area of the opening of the mailing bag to close the interior of the mailing bag. To open the locked

- 6 - SNZ 2498 P LU LU500072 mailing bag, a perforation or a tear-open strip is advantageously provided in the area of the opening of the mailing bag.

A particularly resource-saving and thus environmentally friendly use of the shipping bag according to the invention is possible in that the shipping bag can be disposed of in the waste paper bin as a whole and without separating the padding material layer consisting of paper foam. All components of the mailer can be disposed of and recycled via the waste paper cycle. This prevents incorrect disposal of the mailer, making the recycling process easier for disposal companies.

In addition, a high porosity of the padding material layer can be achieved through the use of paper foam. Due to the high porosity of paper foam, the padding material layers can be achieved with a particularly small amount of material from the paper foam and at the same time a high padding effect of the padding material layer can be achieved. A particularly cost-effective production of the mailing bag is thus possible.

For a particularly environmentally friendly disposal of the mailing bag, an advantageous implementation of the idea of the invention provides that the at least one outer material blank is preferably made of paper and is particularly preferably made of paper that has already been recycled. The so-called recycled paper consists of recycled waste paper, cardboard and cardboard. Thus, the wood reserves required for paper production can be spared

- 7 - SNZ 2498 P LU LU500072 Compared to conventional paper production, the energy and water consumption required for the production of recycled paper is lower. A mailing bag whose outer material blank is made from recycled paper can thus be produced in a particularly environmentally friendly manner. Because the shipping bag is made entirely of recyclable materials, the shipping bag can be disposed of in a particularly environmentally friendly manner.

Advantageously, the padding material layer is arranged inside the shipping bag in such a way that it is spatially separated from the shipping object by an outer layer of material. This avoids contact between the upholstery foam and the item to be shipped. As a result, abrasion of the upholstery foam caused by mechanical rubbing of the item to be shipped against the upholstery material layer can be avoided.

According to the invention, a particularly advantageous spatial separation between the item to be shipped and the upholstery foam can be achieved in that the outer material blank has at least two adjacent outer material layers, with at least one filling chamber being formed between an inner outer material layer and an outer outer material layer. Filling chambers can be arranged, for example, in the form of pockets on an inside of the inner outer material layer facing the interior of the mailer or on the inside of the outer outer material layer of the outer material blank or on an outside of the inner outer material layer of the outer material blank facing away from the interior of the mailer.

- 8 - SNZ 2498 P LU LU500072 So that the padding material layer can be arranged in defined areas of the mailing bag, it is provided in an advantageous embodiment of the invention that the padding material layer is arranged within the at least one filling chamber. In order to be able to produce a particularly dimensionally stable shipping bag, an advantageous embodiment of the shipping bag according to the invention provides that the padding material layer is formed from one or more plate-shaped sections of the solidified paper foam. The paper foam can be brought into the desired size of the plate-shaped sections in a particularly simple manner. A padding material layer with advantageous padding properties can thus be produced by lining up or stacking the plate-shaped sections. The plate-shaped sections can easily be cut according to the size of the filling chambers. Due to the plate-like design of the padding material layer, it can be removed from the filling chambers after the mailing bag has been used and used again for padding piece goods. For this purpose, the plate-shaped section can, for example, continue to be used as padding material or can be further used as filling material by crushing it to paper foam granules. As a result, parts of the mailing bag according to the invention can be reused and reused in a particularly environmentally friendly manner.

In order to achieve a particularly high level of protection for the shipping object received through the padded shipping bag and at the same time a particularly light shipping bag

- 9 - SNZ 2498 P LU LU500072, it is provided in an advantageous embodiment of the idea of the invention that the paper foam is present in the form of paper foam granules.

According to the invention, it is therefore provided that the padding material layer also consists of

Paper foam granules can be formed.

By using paper foam granules, a high porosity of the padding material layer can be achieved, so that a particularly low filling density is achieved.

Thus, a complete filling of the filling chamber with a low

Material use of the paper foam can be achieved, while at the same time a high cushioning effect of the cushioning material layer is produced.

A particularly cost-effective production of the mailing bag is thus possible.

In addition, due to the elastic properties of the paper foam, the padding material layer can cling particularly well to the shipping object, so that it is particularly advantageously protected against substances.

The paper foam granulate is directly by means of a

Extrusion process in the desired shape and size, for example in the form of paper foam chips, can be produced and obtained inexpensively.

Alternatively, paper foam granules can be produced by mechanically crushing plate-shaped paper foam.

This results in different and cost-effective ways of producing or purchasing paper foam granulate.

For particularly easy filling of the filling chambers with

In an advantageous implementation of the idea of the invention, paper foam granules are provided in that the several filling chambers are connected to one another.

Thus, when filling

- 10 - SNZ 2498 P LU LU500072 of a filling chamber, the spread of the paper foam granules can take place within the other filling chambers, so that the filling chambers connected to one another can be filled up quickly. Because the paper foam granules are distributed within the plurality of filling chambers, the paper foam granules can be arranged in the areas in which particularly strong padding is desired. The shipping object arranged in the shipping bag is thus particularly well protected against impacts.

In an advantageous embodiment of the invention, it is provided that the padding material layer is fixed at least in sections on an inside of the outer material layer facing the interior of the mailing bag.

Thus, the padding material layer can particularly advantageously rest against and nestle against the mailing object, so that the mailing object is particularly well protected against stoles.

So that the paper foam designed as a padding material layer remains in the desired position on the outer material layer, an advantageous embodiment of the inventive idea provides that the padding material layer is fixed to the inside of the outer material layer facing the interior of the mailing bag by means of an adhesive with elastic properties. In addition, flexibility of the padded mailing bag is achieved due to the elastic properties of the adhesive, so that the outer material layer and the padding material layer can be placed particularly well on the mailing object. The shipping object is thus particularly well protected against stoles.

- 11 - SNZ 2498 P LU LU500072 The task stated at the outset is also achieved by a method for producing a padded shipping bag, the shipping bag being formed into a shipping bag in one joining step with at least one outer material blank, so that a shipping bag with at least one opening for receiving a Object is formed, a padding material layer made of paper foam being arranged on an inner side of an outer material layer of the outer material blank facing the interior of the mailing bag. By using the outer material blank to form the mailing bag, a mailing bag with an opening for receiving an object can be produced in a simple manner. For this purpose, the padding material layer is first brought into contact with the outer material blank. The outer material layer of the outer material blank forms the outer outer material layer of the mailing bag by subsequently folding the outer material blank together with the padding material layer. The padding material layer is arranged on an inside of the outer material layer facing the interior of the mailing bag. This arrangement of the padding material layer protects the shipping object particularly well against stoles.

In an advantageous embodiment of the padded shipping bag according to the invention, it is provided that at least one filling chamber is formed between two outer material layers arranged adjacent to one another, with the at least one filling chamber being filled with a padding material layer made of paper foam in a subsequent filling step, with the

- 12 = SNZ 2498 P LU LU500072 Outer material blank folded into a mailing bag and joined together along the padding material layers and/or the filling chambers, so that this forms a mailing bag with at least one opening for receiving an object and/or closed filling chambers.

Because at least one filling chamber is formed by the multiple layers of outer material, the padding material layer can be arranged in a particularly simple manner.

For this purpose, plate-shaped sections of the paper foam are applied to a first outer material blank and then covered by a second outer material blank.

Thereafter, the first skin blank and the second skin blank are joined together along the sides of the inflation chambers such that the layers of cushioning material are enclosed within the inflation chambers and fixed in place in the inflation chambers.

In the subsequent joining step, the mutually joined padding material blanks are folded together to form a mailing bag and joined along the sides of the padding material blanks, so that the mailing bag is formed with the opening for receiving the object.

Advantageously, it can also be provided that first the filling chambers are formed by placing a first outer material blank on the second outer material blank and the filling chambers are formed by joining the two outer material blanks along the filling chambers to be formed.

By opening the filling chambers, for example by making a cut, the padding material layer can be introduced into the filling chambers in a filling step and then closed again.

- 13 - SNZ 2498 P LU LU500072 For particularly simple and rapid filling of the filling chambers, an advantageous embodiment of the inventive idea provides that the paper foam is present as paper foam granules, the paper foam granules preferably being produced in a comminution step by mechanically comminuting the paper foam. Fine filling of the filling chambers can be done, for example, by fin blowing the paper foam granules into the filling chambers. The filling chambers are advantageously connected to one another, so that the filling chambers can be filled simultaneously. After filling the paper foam granules into the filling chambers, the filling chambers are closed so that a cushioning material layer is formed.

In order to produce a padded mailing bag in a particularly simple manner, it is provided in an advantageous implementation of the idea of the invention that the paper foam granulate is glued at least in sections in a gluing step to an inside of an outer material layer of the outer material blank facing the interior of the mailing bag, thereby forming the padding material layer. For this purpose, the inside of the outer material layer of the outer material blank can first be coated with an adhesive. The paper foam granules are then applied to the inside, which is coated with adhesive. Depending on the thickness of the adhesive layer and the amount of paper foam granulate applied, a closed or open padding material layer can be created.

- 14 - SNZ 2498 P LU LU500072 Further advantageous configurations of the padded mailing bag are explained using the exemplary embodiments shown in the drawings. They show: Figure 1 a schematic representation of the padded mailing bag in a perspective view, Figure 2 a schematic representation of the padded mailing bag in a sectional view along the section line A-A drawn in Figure 1, Figure 3 a schematic representation of the padded mailing bag with several filling chambers in a sectional view and FIG. 4 shows a schematic representation of the padded mailing bag with a plurality of filling chambers in a sectional view along section line B-B drawn in FIG.

FIG. 1 shows a padded shipping bag 1 for receiving at least one item to be shipped. The mailing bag 1 has an opening 2 for receiving the object and is formed from a blank 3 of outer material. A padding material layer 7 is arranged on an inner side 5 of an outer material layer 6 of the outer material blank 3 facing the interior 4 of the shipping bag 1 . The cushioning material layer 7 is formed from a paper foam 8 and the outer material blank 3 is made from paper. The cushioning material layer 7 can be replaced either by a plate-shaped paper foam section or by paper foam granules 12

- 15 - SNZ 2498 P LU LU500072. The outer material layer 6 of the outer material blank 3 forms an outer outer material layer 9 of the shipping bag 1. In the area of the opening 2 of the padded shipping bag 1, a pressure-sensitive adhesive strip 13 for closing the interior 4 of the shipping bag 1 is arranged. FIG. 2 shows a schematic representation of the padded mailing bag 1 in a sectional view along the section line A-A drawn in FIG. The outer material blank 3 has an outer outer material layer 9 and an inner outer material layer 10 , the outer outer material layer 9 forming the outer side of the mailing bag 1 . A filling chamber 11 is formed between the inner outer material layer 10 and the outer outer material layer 9 . The padding material layer 7 embodied as a plate-shaped section of paper foam 8 is arranged in the filling chamber 11 . Alternatively, it is provided according to the invention that the filling chamber 11 is filled with paper foam granules 12 . The padding material layer 7 is fixed to the inside 5 of the outer material layer 6 of the outer material blank 3 facing the interior 4 of the mailing bag 1 .

FIG. 3 shows a schematic representation of the padded mailing bag 1 with a plurality of filling chambers 11 in a sectional view. The filling chambers 11 are arranged in the form of pockets on the inner side 5 of the outer outer material layer 9 facing the interior space 4 of the shipping pocket 1 . For this purpose, the outer outer material layer 9 and the inner outer material layer 10 are joined together along the sides of the filling chambers 11, so that the

- 16 - SNZ 2498 P LU LU500072 layers of cushioning material 7 are enclosed within the filling chambers 11. The filling chambers 11 are each filled with paper foam 8 present as paper foam granules 12 .

FIG. 4 shows a schematic representation of the padded mailing bag 1 with a plurality of filling chambers 11 in a sectional view along the section line B-B drawn in FIG. The filling chambers 11 are connected to one another. Thus, in a filling step when filling the filling chambers 11 with paper foam granules 12, the filling chambers 11 connected to one another are filled up simultaneously.

Claims (13)

- 17 - SNZ 2498 P LU LU500072 PATENT CLAIMS 1. Padded mailing bag (1) for receiving at least one mailing object, the mailing bag (1) having an opening (2) on at least one side for receiving the object, the mailing bag (1) being formed from at least one outer material blank (3). a padding material layer (7) is arranged on an inner side (5) of an outer material layer (6) of the outer material blank (3) facing the interior (4) of the shipping bag (1), characterized in that the padding material layer (7) consists of a paper foam (8) is formed. 2. Padded shipping bag (1) according to claim 1, characterized in that the at least one outer material blank (3) is preferably made of paper. 3. Padded shipping bag (1) according to claim 1 or 2, characterized in that the outer material blank (3) has at least two mutually adjacent outer material layers (6), with at least one filling chamber between an inner outer material layer (10) and an outer outer material layer (9). (11) is formed. 4. Padded shipping bag (1) according to claim 3, characterized in that the padding material layer (7) is arranged within the at least one filling chamber (11). - 18 - SNZ 2498 P LU LU500072 5. Padded shipping bag (1) according to any one of the preceding claims, characterized in that the padding material layer (7) is formed from one or more plate-shaped sections of the solidified paper foam (8). 6. Padded shipping bag (1) according to one of the preceding claims, characterized in that the paper foam (8) is in the form of paper foam granules (12). 7. Padded shipping bag (1) according to any one of the preceding claims, characterized in that the plurality of filling chambers (11) are interconnected. 8. Padded shipping bag (1) according to one of the preceding claims, characterized in that the padding material layer (7) is fixed at least in sections on an inner side (5) of the outer material layer (6) facing the interior (4) of the shipping bag (1). 9. Padded shipping bag (1) according to one of the preceding claims, characterized in that the padding material layer (7) on the interior (4) of the shipping bag (1) facing inside (5) of the outer material layer (6) by means of an adhesive with elastic properties is fixed. 10. A method for producing a padded shipping bag (1) according to any one of the preceding claims 1 to 9, characterized in that the shipping bag (1) in a joining step at least one outer material blank (3) - 19 - SNZ 2498 P LU LU500072 is formed into a mailing bag (1), so that a mailing bag (1) with at least one opening (2) for receiving an object is formed, with one of the interior (4) of the mailing bag (1 ) a padding material layer (7) made of paper foam (8) is arranged on the inner side (5) facing an outer material layer (6) of the outer material blank (3). 11. The method according to claim 10, characterized in that at least one filling chamber (11) is formed between two outer material layers (6) arranged adjacent to one another, wherein in a subsequent filling step the at least one filling chamber (11) is filled with a padding material layer (7) made of paper foam ( 8) is filled, whereby in the subsequent joining step the outer material blank (3) is folded into a mailing bag (1) and joined together along the padding material layers (7) and/or the filling chambers (11), so that these form a mailing bag (1). at least one opening (2) for receiving an object and/or closed filling chambers (11). 12. The method according to claim 10 or 11, characterized in that the paper foam (8) is present as paper foam granules (12), the paper foam granules (12) preferably being produced in a comminution step by mechanically comminuting the paper foam (8). 13. The method according to any one of claims 10 to 12, characterized in that the paper foam granules (12) in a gluing step at least partially on one of the - 20 - SNZ 2498 P LU LU500072 interior (4) of the mailing bag (1) facing inside (5) of an outer material layer (6) of the outer material blank (3) is glued and thereby the padding material layer (7) is formed.