WO2009046711A2

WO2009046711A2 - Packaging container

Info

Publication number: WO2009046711A2
Application number: PCT/DE2008/001679
Authority: WO
Inventors: Christian Piotrowski
Original assignee: Sunny Selection Gmbh
Priority date: 2007-10-13
Filing date: 2008-10-13
Publication date: 2009-04-16
Also published as: WO2009046711A3; DE112008003439A5; EP2190757A2

Abstract

The invention relates to a packaging container for pourable liquids and powders, in particular pourable foodstuffs, wherein the packaging container comprises an inner flexible bag with an outlet opening and an outer casing, which is adhesively bonded to the inner bag at certain points and forms a part of the outer surfaces of the packaging container.

Description

packaging container

description

The invention relates to a packaging container for pourable liquids and powders, in particular pourable foodstuffs, wherein the packaging container consists of an inner flexible bag with an outlet opening and an outer jacket preferably a cardboard, which is adhesively bonded to the inner bag and wherein the outer shell or cardboard forms only a part of the outer surfaces of the packaging container.

From the prior art containers are known which are made of several different materials. Thus, DE 69910428 T2 describes a packaging container made of polyethylene and aluminum with a laminated tubular multilayer packaging material.

Since separation of a packaging container made of a plurality of different materials into its base materials is extremely expensive for recycling, there is a great need to provide packaging containers made of only a very few materials and components, thus providing quick and resource-efficient recycling into the recycle cycle.

Another problem with prior art packaging containers is that when they are opened, the air flows into the package and the contents of the packaging container come into contact with the surrounding air, which in particular in the case of liquid foods, brings about various chemical processes and leads to a reduced shelf life and thus to a faster perishability of the liquid content.

Furthermore, although there are also packages that fold when emptied and thus counteract the entry of air, but these are again poorly stackable, consume unnecessarily much space during transport and are insufficiently stable against external pressure. Thus, EP 0 746 507 B1 discloses a form of bag-like packaging containers, which consist only of the flexible bag and have no outer jacket, are poorly stackable and insufficiently stable against external pressure, but largely prevent the entry of air into the container. The object of the present invention is to provide a packaging container for pourable liquids and powders in particular pourable food available that allows easy return to the recycling cycle and a cheaper production after use and increases the durability of the contents of the packaging container and thus the known Overcomes problems of packaging containers according to the prior art.

This object is achieved by the technical teaching of the independent claims. Advantageous embodiments of the invention are specified in the dependent claims, the description, the figures and the examples.

The invention is a packaging container with an inner flexible bag made of a flexible fabric or a flexible film, a laminated fabric or a laminated film. The inner flexible

Bag itself or after appropriate treatment is relatively dense or dense against the exchange of gases or liquids. Dense or relatively dense against the exchange of gases or liquids means that in a 1 L packaging container filled with one liter of water within 170

Days storage time at 23 ° C and normal humidity and pressure not more than 0.3 vol .-% water from the flexible bag through the bag material escape. This inner flexible bag is not fully connected at various points with the outer shell preferably an outer carton. The outer jacket can function as a shapers as well as

Stabilizer take over and used for printing advertising and the

Product Information.

No full-surface bonding of inner bag and outer jacket preferably means a punctiform and / or linear bonding or jamming, jamming or pinching. A preferred embodiment of the inner flexible bag is the tubular bag. This tubular bag need not necessarily have the shape of a tube, but it is also possible to give the tubular boot a certain shape, so that the tubular bag approximately the shape of a cube, cuboid, tetrahedron, star, heart, wedge or a triangular prism of a pyramid or Ball has and thus adapts to the outer jacket, which has a comparable shape or forms some surfaces of a body comparable shape. The flexible one Bag is preferably made of only one material or a composite material such as polyethylene, polyethylene terephthalate, polypropylene, polyester, polyurethanes and multilayer materials of the aforementioned substances or other common plastics for storing liquids and especially food. The material for the flexible bag thus preferably consists of a plastic film, which can be constructed from up to 7 layers of different materials. Depending on the content of the flexible bag, it must protect the contents from leakage or CO ₂ leakage, be acid resistant, resistant to alcohol or protected from sunlight, so that sunlight-repellent layers, sunlight-reflecting layers or colored flexible bags are also used can.

The packaging container has a pour opening or outlet opening located at a location that makes it possible to pour out the entire contents of the package. The outlet opening is also preferably provided with a valve which only allows the outlet of the contents of the packaging container but does not allow air or liquid to enter the inner bag in the opposite direction. The outlet opening is preferably located at a corner or at an edge or an optimal point given by the carton or bag shape of the bottom or a side part and may also be in the middle of each side of the package. The advantage of this embodiment is that when draining liquid or powder no or very little air enters the interior of the packaging container and so located in the interior liquid or powder, and any other goods, not or only very little with air in Be brought in contact. This prevents oxidation processes, which ensures a longer shelf life of the food in the case of filling the packaging container with food. Through a built-in valve in the outlet opening and the flexible packaging of the packaging container, the inner flexible bag and thus also the packaging container by the liquid weight and the resulting vacuum during vacuum together. Due to the elastic construction, the inner flexible bag does not or only very slightly fill with air, which protects the bag contents and leads to a longer shelf life of the bag contents.

Thus, an emptying of the flexible inner bag can be done without the volume of liquid or solid removed by a corresponding

PIO-P02484WO011 Registration Volume of air is replaced, the outer jacket must also contract in some way when contracting the flexible hose. This is done by along predetermined fold lines, fold lines or folding edges at least the two along the folding lines, fold lines or folding edges adjacent surfaces or partial surfaces of a front, back, side, cover or bottom surface to move toward each other and each other when completely emptied inner bag lie. This means that when the inner bag is completely emptied, at least two surfaces of the outer sheath lie flat on one another and only the emptied flexible bag is in between.

An important part of the invention are the fold lines or fold lines or folding edges (called folding edges in the following) on the surfaces of the outer jacket. The folded edges are recorded on the surfaces of the outer shell or at least their course indicated, the folding edges are preferably also punched, perforated, pressed or prefolded in the surfaces of the shell, so that when compressing the packaging container according to the invention, a folding preferably occurs along the folding edges, to ensure optimal and complete emptying of the flexible inner bag. In FIGS. 21 to 25, the folded edges are shown in dashed lines.

The fold edges are arranged on the respective packaging containers so that a folding of the packaging container for completely emptying the inner bag is possible without having to cut open the outer jacket, tearing or separating.

For packaging containers according to Figure 16, 18 or 19, it is preferred if the edge is cut between the two corners, i. is open, join the three surfaces of the outer shell, so that these edges do not hinder the folding of the outer shell. This means that the outer sheath has been cut along the aforementioned edge, or at least this edge is perforated, perforated, punched or preformed such that the outer sheath tears along this edge during compression and deflation.

In order to discharge the liquid from the packaging container, the packaging container is provided with a spout opening or outlet opening, which is preferably equipped with a valve. This valve, which can also be used as spout or portioner, must prevent that after pouring the liquid or the powder neither oxygen in

PIO-P02484WO011 Registration _

penetrate the packaging container even more liquid or powder can flow out of the bag.

An example of a valve usable in accordance with the invention is shown in FIGS. 9, 10, 13 and 14. Figures 13 and 14 show the structure of the valve, which can be further provided by means of a screw cap with a lid. The valve has openings to exit the bag contents. FIGS. 13 and 14 show an embodiment of a valve with three openings, whereby a different number of openings is also possible. In the middle of the valve is a pin on which a rubber ring as shown in Figures 9 and 10, is plugged. The rubber ring allows only the outlet of the contents of the flexible bag from the inside out through the three openings, wherein the rubber ring bulges outward through the pressure exerted on the bag contents pressure and let the bag contents laterally escape the rubber ring over. As soon as pressure is no longer exerted on the bag contents, a negative pressure is created in the flexible bag, which causes the rubber ring in the valve to be pulled inwards, thereby closing the three openings in the valve.

Other possible forms of a valve could consist of a tubular outlet, wherein the tube has a thickening at one point, where a

Ball is movably enclosed in such a way that the ball to the

The packaging container facing tube opens when pressure is applied to the bag so that the bag can be emptied and pushed or pulled in the direction of the bag when being pressed from the outside of the tube or due to negative pressure in the flexible bag and the bag closes in the direction of the bag extending tube part of the spout.

In principle, the present invention also works without a valve, as long as the flexible bag is not actively expanded again when the flexible bag is emptied before closing the outlet opening, so that the barrel and liquid can penetrate into the bag.

In conventional packaging containers for liquid foods from the prior art, such as the known Tetra-Pak ^®, is used mostly on the basis of a carton, a lot of material technology, the same rigid material used on all surfaces of the packaging container construction. The use of several relatively rigid materials inevitably results in a rigid and inflexible construction. By the missing

PIO-P02484WO011 Registration Elasticity of the packaging material and a pouring hole attached in the upper area also flows air into the container, whereby the contents come into contact with air and thus, if it is a food, the contents spoil faster. On the other hand, packaging which does not have a multi-layered construction according to the Tetra- ^Pak® principle and which is glued together over its entire surface, however, exhibits poor stackability, bursts more easily or loses its stability during emptying.

Stackability is understood to mean that at least 5 pallets of completely filled packaging containers without packaging cardboard can be placed on top of each other without the stack collapsing.

The present invention overcomes these disadvantages known from the prior art. In particular, easily recyclable, stable and stackable packaging containers are provided, which moreover can be easily and completely emptied and, even without a valve, prevent the entry of air into the inner bag during emptying. The invention

Packaging containers preferably consist of only two materials (apart from the adhesive), namely preferably a plastic for the flexible inner bag and a carton for the outer jacket. Already at

Consumption of materials and recycling in plastic waste and can be used

Paper waste take place, so that expensive material separations omitted, as is often required in the packaging for example for milk in the prior art.

The packaging container presented here has an inner bag and an outer jacket and preferably has a square or a rectangular, or even a different shape with a bottom surface, a top surface, two side surfaces, a front surface and a back surface. In principle, the invention is not limited to certain types of packaging, so that more unusual shapes such as heart, star, tetrahedron, pyramid, wedge or the like can be used, the cubic or cuboid shape are preferred.

Another preferred form of the packaging container is the triangular prism as shown in Figure 8, 11 or 12. This particularly preferred form of a packaging container has an outer shell, the three

PIO-P02484WO011 Registration Forms side surfaces of the triangular prism, the bottom surface and the top surface are open. Within the shell is a preferably cylindrical tubular bag or a tubular bag with a shape that also approximately corresponds to a triangular prism.

The outer shell, preferably a paperboard or a plastic, may be formed from a rectangular matrix which is correspondingly folded and bonded or glued along an overlapping part. The triangular prism preferably has either three side surfaces of equal size and an equilateral triangle (a = b = c) or two equally sized side surfaces and an isosceles triangle (a = b ≠ c) as the base.

It is further preferred if a side surface has a central folding edge, which runs parallel to the longitudinal axis of the packaging container, as shown in FIG. The folded edge runs in the middle of the surface spanned by the edges c and h parallel to the edge h. When emptying the packaging container, the side surface stretched by the edges c and h fold along the fold, so that the inner bag is compressed and thus completely emptied. In the emptied or completely emptied state, the packaging container then has a rectangular shape as well.

As shown in Figure 8, an outlet may optionally be located at the top of the packaging container with a valve. Another preferred location for attaching the outlet is the upper portion of an edge between two side surfaces, and more preferably the edge opposite the side with the central fold line.

The outlet in the packaging containers according to the invention is shown in FIGS. 13 and 14. The outlet may have an external thread to fire the outlet by means of a plug, as shown in FIG.

FIG. 9 shows an outlet with an inner valve, which only allows the exit of the contents of the inner bag, but not the entry of air and liquid.

The outer shell of the packaging container can be made of cardboard, cardboard, paper, tissue, edible materials such as corn or soybeans, bamboo, wood,

PIO-P02484WO011 Registration Plastic, plastic, cellulose, metal or a metal alloy, cardboard, cardboard and plastic are preferred and cardboard is particularly preferred. It is preferred if only one material is used for the outer jacket. Furthermore, the outer jacket is preferably not laminated, non-laminated, not multi-layered, contains no aluminum foil and is not fully bonded or bonded to the material containing the pourable liquid or the pourable solid. In addition, the outer jacket is preferably produced from a folding pattern. It is not necessary to connect two or more items together to obtain the outer shell.

It is essential to the invention that the outer jacket does not form all surfaces of the packaging container, since then an easy recyclability would no longer exist. In the case of a cuboid packaging container, the outer jacket preferably forms 2 or 3 or 4 of the maximum 6 surfaces and more preferably 3 of the total of 6 surfaces, the surfaces formed preferably lying in series one behind the other.

In a packaging container in the form of a triangular prism, as shown in Figure 8, the outer jacket preferably forms the three side faces of the prism.

A size-tuned jacket, preferably cardboard, is bonded or glued to the inner bag at 15-20 locations, preferably at 10-14, more preferably 6-9, and most preferably at 1-5 locations. The bond preferably bonding can be applied selectively and / or as a strip or tape so that the packaging container receives the necessary stability but can also be easily separated from the bag to be disposed of separately. Combinations of punk-shaped bonds with linear or strip-shaped or circular bonds can also be used. These 15 - 20 splices are adhesive surfaces of more than 4 mm ² each. Instead of these up to 20 large-area splices also several hundred or even several thousand small-area splices can be used, which then preferably distribute evenly or according to a specific pattern on the board surface. The type and design of the individual adhesive surfaces is irrelevant, it is important, however, that a full-surface bonding is avoided and preferably the bonded area significantly less than 50% of the total cardboard inside area, preferably less than 40% of the total

PIO-P02484WO011 Registration Cardboard inner surface, more preferably less than 30% of the total cardboard inner surface and more preferably less than 20% of the total inner cardboard surface.

It is essential that preferably no full-surface bonding takes place, wherein the entire surface is already an adhesion of an area of 50% and more understood.

The outer shell preferably cardboard or plastic has at least three of the following surfaces, namely bottom surface, top surface, two side surfaces

(left side surface, right side surface), front surface and back surface. The at least three surfaces of the outer shell preferably cardboard or

Plastic selected from bottom surface, top surface, left side surface, right

Side surface, front surface and back surface are connected by an edge. By this outer jacket preferably cardboard or plastic, the inner flexible bag is at least partially enclosed and is connected by the described punctiform, strip-shaped, linear, wave-shaped and / or circular bonding with the outer shell preferably cardboard or plastic. The outer shell contributes to the stabilization of the packaging container and is therefore also referred to as a stabilizing jacket preferably stabilizing cardboard or stabilizing plastic.

The term "linear" as used herein includes not only straight lines but also arbitrary curves, circles, waves, zigzag shapes, and the like.

In this case, each of the at least three surfaces of the outer stabilizing carton is less than 20% of the respective area, preferably less than 15% of the respective area, more preferably less than 10% of the respective area, even more preferably less than 7% of the area more preferably with less than 5% of the respective area, even more preferably with less than 4% of the respective area, even more preferably with less than 3% of the respective area and particularly preferably with less than 2% of the respective area glued to the inner flexible bag.

In addition, it is preferred if the packaging container according to the invention has a bottom surface as one of the at least three surfaces. This floor area also serves as a stand space and ensures that the packaging container still stands upright even after partial emptying.

PIO-P02484WO011 Registration In addition, in particular, three surfaces are preferred and more preferably a bottom surface and adjoining two opposing surfaces such as bottom surface, back surface and front surface or bottom surface and both side surfaces.

Furthermore, it is preferred if the opposing surfaces, that is, the two side surfaces or the front surface and back surface have a Sollfaltlinie in the bottom of the bottom surface nearby area, preferably this Sollfaltlinie seen from the bottom surface is in the half width of the bottom surface, so that when emptying the Packaging container, the two opposite lateral surfaces or cardboard surfaces can be moved towards each other and can be folded along the respective Sollfaltlinie the respective surface until the two outer surfaces or cardboard surfaces lie flat against each other when completely emptying the packaging container, the Sollfaltlinie each of the two surfaces ideally a right angle forms and the empty or completely empty packaging container has assumed a T-shape.

Figure 4 clearly shows the almost completely emptied packaging container, wherein the front surface almost rests against the back surface. At the bottom of the

Front surface and the back surface is to recognize the Sollfaltkante along which front surface and back surface can be folded, so that the lower part, i. the part below the Sollfaltlinie the two surfaces the

Floor surface then touched when the packaging container is completely empty, in which case the upper parts of the front surface and back surface, i. the

Area above the Sollfaltlinie lie flat against each other.

In addition, in FIG. 4, the outlet opening can be seen in the middle at the lower edge of the front surface, just above the projection of the bottom surface. Preferably, the outlet opening is configured in such a way that a material flow can only take place out of the inner bag but not into the inner bag. This prevents air from entering the inner bag and allows the bag to be completely emptied and the packaging container to fold completely.

According to the invention, in a preferred embodiment, the stability of the packaging container is not primarily determined by the outer jacket, preferably the outer carton. The outer jacket preferably has outer carton

PIO-P02484WO011 Registration in this embodiment, especially stabilizing function as soon as the packaging container has been partially emptied. In the fully filled state, the stability and thus the stackability is effected by the inner bag, which in principle in all embodiments in round, oval, conical, cylindrical, cube-shaped, cuboid, pyramidal, square or rectangular shape or in the form of a triangular prism can be configured , wherein the square and rectangular and in particular the rectangular shape is preferred because of the optimal stackability. A cuboid is defined by the fact that its parallel edges are the same length.

Because of the very good stability and the very good stackability packaging containers in the form of a triangular prism are also very preferred.

In a further preferred embodiment, depending on the fill level of the inner flexible bag, the bond can be successively released or successively released, whereby the inner flexible bag is not kept mechanically open, but can fold or roll up better and yet not adversely affect the stability of the entire packaging container is impaired by the reduced bond area, since the level and thus the mass of liquid or powder in the inner bag has become smaller and the remaining adhesive surface ensures the necessary stability.

Particularly important in the case of the packaging containers according to the invention is that they are stackable and have a dimensional stability which is sufficient to allow stacking of the packaging container, which reduces the space requirement to a minimum and saves transport costs.

In order to achieve a particular stability with the least possible (adhesive) connections, different adhesive schemes can be used. The preferred adhesive schemes are shown in FIG. 4. The cardboard is preferably bonded to the front surface and / or to the back surface by means of the adhesive schemes shown in FIG. 4 with the packaging container. But there are also possible bonding with the bottom surface, the side surfaces or the top surface. The adhesive dots shown schematically in FIG. 4 can also be summarized as shown in FIG. The term "pointy" thus stands for a bonding of 20% of the available total area, preferably 10% of the available total area and especially preferably 5% of the available total area

PIO-P024B4WO011 Registration Adhesive schemes of Fig. 4 are now many possible adhesive variants possible. For example, a carton may be adhered to the front surface of the packaging container with a two-point adhesive bond, or a carton may be adhered to the back surface of the packaging container with a five-point adhesive bond, or a carton may be bonded to one or both side surfaces of the packaging container glued with a seven-point gluing. Of course, one side surface can be glued with a four-point bond and the other side surface with a six-point bond. That is, gluing patterns for each surface can be selected, with the possibility also that no bonding occurs to one or two surfaces.

Instead of or in addition to the spot bonding, a linear bonding can take place, which can run, for example, along the edges as well as on the surfaces. The bond lines can be horizontal or vertical or oblique, rectilinear, zig-zag or wave-shaped or subject to no geometry.

The individual lines can be arranged parallel to one another, running towards one another or without geometry and can extend along the side surface, be continuous or interrupted, and can also be supplemented by punctiform bonds.

This type of punctiform and / or linear bonding differs significantly from a bonding of packaging containers from the state of

Technology. For example, the Tetra-Pak ^® uses full-surface bonding. The packaging container according to the invention thus bypasses

Saving adhesive resources this known disadvantage and therefore leads to easily separable material combinations and fixings. Also, the packaging container is thus awarded a better recycling property, since at a selective bonding of the cardboard can be separated from the packaging container easier.

Another important aspect is the recyclability of the materials that make up the packaging container according to the invention. By using only two materials (cardboard or plastic and film, also laminated) better recycling properties over packaging containers from the prior art, which are filled with liquid or powdered food, achieved. It should be emphasized

PIO-P02484WO011 Registration that the packaging container according to the invention does not consist of composite materials, as used in packaging containers of the prior art. Although the inner flexible bag may consist of several materials or layers of material, which need not be separated and can be recycled together.

Since the outer shell preferably outer carton is not completely, but only selectively glued to the packaging container, the jacket or cardboard is easily separated after use of the packaging container and thus easily disposed of separately with the actual packaging container.

Due to the use of only vinous different materials, not only is a packaging container provided with the packaging container according to the invention for, in particular, liquid or powdered foodstuffs, which can be introduced very well into the recycling cycle, but also a substantially cost-effective production of the packaging container according to the invention can be achieved , Preferably, only one material or composite material is used for the inner flexible bag and also only one material for the outer jacket. After the separation of the outer jacket and the inner bag, two valuable substances are obtained, namely a plastic and, as a rule, a cardboard, which can be supplied to two recycling circuits. Apart from the adhesive and the valve packaging container according to the invention thus preferably consists of only two materials or types of material. These two materials or types of material are preferably a plastic and a cardboard.

This favorable combination of features of the packaging container presented here is surprising and gives the packaging container according to the invention superior functionalities over packaging containers produced according to the prior art. The packaging container according to the invention is stackable and provides optimum space utilization, is very easy to recycle, can be completely emptied and prevents the entry of air or liquid into the container, whereby the content remains longer lasting.

Thus, the present invention relates to packaging containers preferably for liquid food, wherein the packaging container preferably does not fill with air when emptying. Accordingly, the present invention relates to packaging containers, which change their shape with progressive emptying and folded at predetermined folding edges, wherein the

PIO-P02484WO011 Registration Packing container stand stably on the bottom surface even in the partially deflated state, ie not fall over without external influences even after months storage time and in the fully deflated state have a flat outer jacket lying side by side, with only the empty inner bag between the surfaces of the outer shell is. Particularly preferred is a T-shape of a completely empty and accordingly folded packaging container. Furthermore, it is essential to the invention that the outer jacket does not completely surround the inner bag, but entire surfaces or at least partial surfaces of the outer jacket are open, since otherwise the folding according to the invention would not be possible. In addition, it is advantageous if the inner bag is preformed in the shape of the outer jacket, ie in the form of the packaging container and thus in the fully filled state has a cuboid shape, cube shape, tetrahedral shape, pyramid shape, wedge shape, prism shape, etc. Finally is essential to the invention that there is no full-surface bonding or connection of the inner bag and outer jacket, coat and bag are not laminated together or that the bag forming material is not an inner layer of the outer shell and the material forming the bag easily from the consumer outer jacket can be separated.

Furthermore, the present invention relates to a method for emptying the packaging containers according to the invention, comprising the steps of: a) providing a filled packaging container according to the invention, b) compressing two opposite ones through the outside

Cladding formed surfaces while simultaneously draining the contents of the flexible bag, c) further compressing the opposing faces formed by the outer jacket and folding these surfaces as the flexible bag progressively deflates along the fold edges on the opposing surfaces, and d) completely deflating the flexible bag by compressing the opposite surfaces formed by the outer shell until the two surfaces adjacent to the fold edge touch or lie on top of each other.

PIO-P02484WO011 Registration Description of the figures

Figure 1 shows a front view of the container according to the invention with spout opening.

Figure 2 shows a first side view of the container according to the invention with spout opening.

Figure 3 shows a second side view of the container according to the invention with spout opening.

Figure 4 shows a view of the container according to the invention in the deflated folded state.

FIG. 5 shows the preferred adhesive schemes in the case of strip bonding of inner bag and cardboard.

FIG. 6 shows the preferred adhesive schemes for 1-3 punctiform splices in the case of an inner bag and cardboard bond. The numbers under the

Single graphics show the number of glue dots. The rounds

Circles in the single graphics represent the punctual ones

Adhesive dots.

FIG. 7 shows the preferred adhesive schemes for 5-9 punctiform splices in the case of an inner bag and cardboard bond. The numbers below the individual graphics indicate the number of adhesive dots. The round circles in the individual graphics represent schematically the punctiform adhesive dots.

Figure 8 shows a packaging container in the form of a triangular prism with the footprint of an isosceles triangle. On a side surface is centrally located at the top edge of the outlet opening. The two equally sized side surfaces overlap on the shown front side surface and are connected together along the overlapping surface.

Figure 9 shows a possible form of outlet with an internal valve.

PIO-P02484WO011 Registration FIG. 10 shows a possible form of an outlet which is provided with a closure, in particular a resealable screw cap.

FIG. 11 shows a packaging container in the form of a triangular prism with the edges a, b and c and the height h. It can be seen that the top surface is open and on the right side surface, the centrally arranged and running parallel to h folding edge can be seen.

Figure 12 shows a packaging container in the form of a triangular prism, in which the edges are highlighted.

FIG. 13 shows a possible outlet with a thread and without a valve.

FIG. 14 shows another view of a threaded outlet with no valve.

Figure 15 shows a packaging container according to the invention with outlet opening with valve on the Forderfläche, a flexible bag inside and an outer shell, the two side surfaces are open and the shell forms a top surface, bottom surface, front surface and back surface.

Figure 16 shows a packaging container according to the invention with outlet opening with valve on the Forderfläche, a flexible bag inside and an outer shell, both side surfaces and the top surface are partially open and the shell forms a bottom surface, front surface and back surface. The openings in the side surfaces and the top surface are in the middle

Area of the areas.

Figure 17 shows a packaging container according to the invention with outlet opening with valve on the Forderfläche, a flexible bag inside and an outer shell, both side surfaces and the top surface are partially open and the shell forms a bottom surface, front surface and back surface. The openings in the side surfaces and the top surface are located at the edges

PIO-P02484WO011 Registration these surfaces, meaning the edges which extend from the front surface to the back surface.

Figure 18 shows a packaging container according to the invention with outlet opening with valve on the Forderfläche, a flexible bag inside and an outer shell, the top surface is open and the shell, the bottom surface, front surface, back surface and the two side surfaces.

Figure 19 shows a packaging container according to the invention with outlet opening with valve on the Forderfläche, a flexible bag inside and an outer shell, the bottom surface is open and the shell, the top surface, front surface, back surface and the two side surfaces.

Figure 20 shows a packaging container according to the invention with outlet opening with valve on the Forderfläche, a flexible bag inside and an outer shell, both side surfaces and the top surface are open and the shell forms a bottom surface, front surface and back surface.

FIG. 21 shows hexagonal packaging containers according to the invention with four preferably equally large side surfaces, a front surface, a back surface and a hexagonal top and bottom surface. Side surfaces and front surface and back surface are preferably all the same size, i. of length and width coinciding. The dashed line visualizes the fold line along which the folding of the packaging container takes place during emptying. In Embodiment 21A, the top surface is absent and the outer shell forms the bottom surface, the 4 side surfaces, the front surface, and the back surface. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve. In embodiment 21B, two of the four side surfaces are missing and the outer shell forms the bottom surface, top surface, the remaining two opposite side surfaces, the front surface and the back surface. Inside is a flexible bag (not

PIO-P02484WO011 Registration shown) and on the front surface there is an outlet opening (V) with valve.

In Embodiment 21C, the two side surfaces adjacent to the front surface and the back surface are omitted, and the outer shell forms the bottom surface, top surface, the remaining two

Side surfaces and the front surface. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve. In embodiment 21 D, the top surface is missing and there are no areas in the 4 side surfaces and the front and back surfaces. The outer shell forms the bottom surface and the remaining portions of the side, front and back surfaces. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve. In Embodiment 21 E, portions in the 4 side surfaces and the front and back surfaces are missing. The outer shell forms the bottom surface, top surface and. the remaining portions of the side, front and back surfaces. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve.

FIG. 22 shows inventive polygonal packaging containers with, for example, five, eight or nine edges. As described in FIG. 21, these further basic shapes may have partially or completely open areas or open sides. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve. The dashed line visualizes the fold line along which the folding of the packaging container takes place during emptying.

FIG. 23 shows packaging containers according to the invention in star shape, triangular shape, tetrahedral shape, pyramid shape, wedge shape, tube shape and hexagonal can shape. As described in FIG. 21, these further basic shapes may have partially or completely open areas or open sides. Inside is a flexible bag

(not shown) and on the front surface there is an outlet opening (V) with valve. The dashed line visualizes the

PIO-P02484WO011 Registration Folding line, along which the folding of the packaging container takes place during emptying.

FIG. 24 shows packaging containers according to the invention in the form of cubes, tubulars, oval shapes, heart shapes, cylindrical shapes and round shapes with two

Pointed edges. As described in FIG. 21, these further basic shapes can be partially or completely open areas or open areas

Own pages. In some embodiments according to FIG. 24, the open areas or partial areas are indicated. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve. The dashed line visualizes the fold line, along which the folding of the

Packaging container when emptying done.

FIG. 25 shows packaging containers according to the invention in box form, cylindrical form with oblique oval top surface and cuboid wedge shape. As described in FIG. 21, these further basic shapes may have partially or completely open areas or open sides. In some embodiments according to FIG. 25, the open areas or partial areas are indicated. Inside is a flexible bag (not shown) and on the front surface there is an outlet port (V) with valve. The dashed line visualizes the fold line along which the folding of the packaging container takes place during emptying.

Examples

Example 1 Production of a cuboid packaging container

A conventional tubular bag having an outlet opening mounted in the lower third of the tubular bag is formed by means of one of the adhesive schemes shown in Figures 5, 6 and 7, or variants thereof having an area of about 5% of the available total bondable area with a stabilizing carton which is Covered in size with the tubular bag, glued to the front and back surfaces. The tubular bag can be filled with liquids or with solids, eg. B. a powder to be filled.

PIO-P02484WO011 Registration As shown in FIGS. 1-4, the inner flexible bag, which is preferably made of polyethylene or polypropylene, already has a parallelepiped-shaped structure which adheres only part of its front surface, back surface and bottom surface to the outer casing which contains the product information that the bag can be easily separated from the outer jacket during disposal by the consumer.

The outer shell has a total of four folded edges, wherein a folding edge is the Kant between the bottom surface and the back surface, the second folding edge the

Edge between the bottom surface and the Forderfläche is and the third folding edge is located at about half the height of the bottom surface in the lower region of the back surface and the fourth folding edge is approximately half the height of the bottom surface in the lower region of the front surface. Figure 4 shows the folded completely emptied packaging container. It can be seen that the back surface and the

Folded front surface along the fold edges and lie flat on each other when completely emptying the bag contents.

Example 2

Production of a packaging container in the form of a triangular prism

A conventional tubular bag of conventional material suitable for storing liquid food having an outlet opening mounted in the upper portion of the tubular bag is adhered to the outer shell along the center lines of the side surfaces of a triangular prism. The outer shell is made of a rectangular carton folded along the three side edges to result in a triangular-shaped prism having its bottom and top surfaces open. The folding of the rectangular carton was made in such a way that two side areas of equal size were created, whereby on one side surface the two ends of the carton overlapped by approx. 1 cm and were glued along the overlapping area.

The edge lengths are a = b = 10 cm and c = 8 cm and the height h is 20 cm and the tubular bag is designed for a capacity of 1000 ml. The outlet has a valve and in the middle of the side surface with 8 cm wide is a folding edge.

PIO-P02484WO011 Registration The tube bag is filled with 1000 ml of milk and the packaging container can be emptied one-handed by the packaging container from the side surface with 8 cm width ago grabbed and compressed so that the two outer edges of the surface stretched by c and h to move towards each other.

When the inner bag is completely emptied, the edges of the surface are stretched by c and h and the packaging container has the shape of a rectangle with a thickness of approximately 6 to 8 mm.

The outer jacket is split along the bonded overlapping area and the tubular bag is pulled off the jacket so that carton and bag can be recycled separately.

As the valve, it is preferable to use one as shown in Figs. 9 and 10, which allows only the pouring of the bag contents and closes by a negative pressure built up in the inner bag, thus preventing the ingress of air and liquid into the inner flexible bag.

Example 3

Example 3 relates to a packaging container according to Figure 15 with an inner flexible plastic bag, which is suitable for storing milk and other liquid foods, this inner bag is already preformed in cuboid shape.

The dimensions of the packaging container are:

Width: 9 cm Depth: 6 cm Height: 19 cm

Depth of the valve: 0.8 cm Diameter of the valve: 1, 7 cm

The outer shell is made of cardboard and is glued by means of three strip-shaped areas with the inner bag, each on the inside of the back surface and the front surface at the same distance from each other and the outer edge starting about 2.5 cm below the top and ending approx 2.5 cm in front of the lower edge.

The outer shell forms the front surface, top surface, back surface and bottom surface. The outlet is provided with a valve which closes on one side and allows only the evacuation.

PIO-P02484WO011 Registration The edge between the front surface and the bottom surface forms a folding edge and the edge between the back surface and the bottom surface forms the second folding edge. The third folding edge runs horizontally on the front surface at a height of approx. 3 cm measured from the floor surface and a fourth measured approx. 3 cm in height from the floor surface horizontally on the back surface. The fifth fold edge runs in the middle of the top surface from one open side surface to the other. In addition, the edges between the top and front surfaces as well as the top and back surfaces form further fold edges.

When fully emptied, the packaging container forms a T-shape with the top surface facing outward, i.e., outward. away from the inner bag as well as inward, i. can be folded in the direction of the inner bag.

For recycling, for example, the completely empty packaging container can be torn open along the top surface and the top-open casing can be separated from the inner bag along the adhesive strip. Outer jacket and inner bag can then be disposed of separately, since both parts consist of only one material. Furthermore, the valve could still be separated and disposed of as plastic waste.

Example 4

Example 4 relates to a packaging container according to Figure 16 with an inner flexible plastic bag, which is suitable for the storage of acidic liquids such as juices and wine, this inner bag is already preformed in cuboid shape.

The dimensions of the packaging container are: Width: 7 cm Depth: 7 cm Height: 20 cm

Depth of the valve: 0.7 cm Diameter of the valve: 1, 9 cm

The outer jacket consists of cardboard and is glued by means of point-shaped areas with the inner bag. Two point-shaped areas are located in the upper part of the one and the other side surface and two point-shaped areas are in the right portion and two point-like areas in the left portion of the top surface. Furthermore, there are two punctiform areas respectively in the lower area of the two

PIO-P02484WO011 Registration Side surfaces and two point-shaped areas are arranged in the middle of the floor surface.

The outer shell forms the front surface, back surface and bottom surface as well as parts of the top surface and the two side surfaces. Cover surface and both side surfaces are cut out in the middle area. The outlet is provided with a valve as shown in Figures 9 and 10, which closes on one side and only allows the evacuation.

The folded edges are in the middle of the side surfaces and the top surface as indicated in Figure 16 by a solid central line and at the various edges and on the front surface and back surface in about 4.5 cm height from the ground. The emptying and folding of the packaging container is carried out as described in Example 3.

Example 5

Example 5 relates to a packaging container according to Fig. 17 with an inner flexible plastic bag suitable for storage of pourable solids, e.g. Flour, sugar, salt, ground pepper, millet, rice, lentils and the like is suitable, this inner bag is already preformed in cuboid shape.

The dimensions of the packaging container are: Width: 8 cm Depth: 10 cm Height: 14 cm

Depth of the outlet: 1, 1 cm Diameter of the outlet: 2.5 cm

The outer shell is made of an edible material made of corn and is bonded by means of 8 to 10 horizontal strips on the inside of the front surface and an equal number of strips on the inside of the back surface with the inner flexible bag.

The outer shell forms the front surface, back surface and bottom surface as well as the middle portions of the top surface and the two side surfaces. The emptying and folding of the packaging container is carried out as described in Example 3. The folded edges are shown as the center line on the part of the top surface and the side surface.

PIO-P02484WO011 Registration

Claims

claims

A packaging container for pourable liquids and powders comprising an inner flexible bag having an outlet opening and an outer jacket, wherein the inner bag is not fully connected to the outer jacket and the outer jacket forms only a part of the outer surfaces of the packaging container.

2. Packaging container according to claim 1, wherein the outer jacket made of cardboard, cardboard, paper, bamboo, wood, plastic, plastic, cellulose, metal or a metal alloy.

3. Packaging container according to claim 1 or 2, wherein the inner flexible bag is connected in the region of the outlet opening with the outer jacket.

4. The packaging container according to claim 1, 2 or 3, wherein the inner flexible bag is punctiform or linear connected at 1 to 20 points with the outer shell.

5. Packaging container according to one of the preceding claims, wherein the packaging container in the fully filled state in the shape of a cylinder, cuboid, triangular prism, polygonal container, star, triangle, tetrahedron, pyramid, wedge, tube, cube, oval cylinder, heart, box or square.

6. Packaging container according to one of the preceding claims, wherein the outer jacket surrounds the inner flexible bag in a cuboid packaging container only on the bottom surface, front surface and back surface of the cuboid packaging container.

7. Packaging container according to one of the preceding claims, wherein the outer jacket in a cuboid packaging container, the inner flexible bag only on the bottom surface, top surface and back surface or on the bottom surface, top surface and front surface or on the bottom surface,

Covering surface and a side surface of the cuboid packaging container surrounds.

PIO-P02484WO011 Registration

8. Packaging container according to one of the preceding claims, wherein the outer jacket in a cuboid packaging container surrounds the inner flexible bag only on the bottom surface and the two side surfaces of the packaging container.

9. Packaging container according to one of the preceding claims, wherein the packaging container in the deflated state forms a T-shape.

10. A packaging container according to any one of claims 1-5, wherein the outer shell surrounds the inner flexible bag only at the three side surfaces of the packaging container in a triangular prism as a packaging container.

11. A packaging container according to claim 5 or 10, wherein the triangular prism three equal side surfaces and a base as an equilateral

Triangle or two equal side surfaces and has an isosceles triangle as a base.

12. A packaging container according to claim 5, 10 or 11, wherein the triangular prism in the middle of a side surface has a folding edge parallel to the longitudinal axis of the packaging container.

13. Packaging container according to one of the preceding claims, wherein the packaging container forms a rectangular shape in the deflated state.

14. Packaging container according to one of the preceding claims, wherein the outlet opening is provided with a valve which allows only the outlet of the content but not the entry of air or liquid into the packaging container.

15. The packaging container according to claim 1, wherein the packaging container has a cuboid or cubic shape with a bottom surface, top surface, two side surfaces, a front surface and a back surface or the shape of a triangular prism having a bottom surface, a top surface and three side surfaces.

P1O-P02484WO011 Registration

16. The packaging container according to one of the preceding claims, wherein the inner flexible bag is selectively connected at 1 to 5 points with a surface of the jacket.

17. Packaging container according to one of the preceding claims, wherein the inner flexible bag in the region of the edges of the shell and / or in the region of the surface center line is selectively and / or linearly connected to the outer shell.

A packaging container according to any one of the preceding claims, wherein the inner flexible bag is punctiform at 2 locations or three locations or four locations with the front surface and / or 2 locations or three locations or four locations with the back surface and / or 2 locations or three Make or four sections connected to one or both side surfaces.

19. Packaging container according to one of the preceding claims, wherein the punctual connections are detachable.

20. Packaging container according to one of the preceding claims, wherein the outlet opening is mounted in the lower or in the upper third of the packaging container.

21. Packaging container according to one of the preceding claims, wherein it is the inner flexible bag is a tubular bag.

22. Packaging container according to one of the preceding claims, wherein the surfaces formed by the outer jacket have at least one folding edge.

23. Packaging container according to one of the preceding claims, wherein the front surface and the back surface or the two side surfaces each have a Sollfaltlinie.

24. Packaging container according to one of the preceding claims, wherein, as the emptying of the packaging container progresses, at least two opposite surfaces, which are formed by the outer jacket, move toward one another and lie on one another when completely emptied.

PIO-P02484WO011 Registration

25. Packaging container according to one of the preceding claims, wherein the desired fold line is located horizontally in the amount of half the width of the bottom surface on the front surface and back surface or the two side surfaces.

26. Packaging container according to one of the preceding claims, wherein the packaging container is stackable.

A method of emptying the packaging containers according to any one of claims 1 to 24, comprising the steps of: a) providing a filled packaging container according to any one of claims 1 to 24, b) compressing two opposite surfaces formed by the outer jacket, with simultaneous emptying of the contents of the flexible Bag; c) further compressing the opposing faces formed by the outer jacket and folding these surfaces as the flexible bag progressively deflates along the fold edges on the opposing surfaces, and d) completely deflating the flexible bag by compressing the opposing faces formed by the outer jacket until the two adjacent surfaces on the fold edge touch or lie on one another.

PIO-P02484WO011 Registration