ES2874880T3 - Container packaging and procedure for its manufacture - Google Patents

Abstract

Container package (1) that presents a plastically deformable inner container (2), that has an inner container shell (3) and an inner container shoulder (4) to receive a filling product, in which the inner container shoulder (4) has a dispensing section (5) having a dispensing opening (6), an elastically deformable outer container (7), having an outer container shell (8), an outer container shoulder (9) and at least one valve (10), in which the outer container shoulder (9) has an outer container nozzle (11) presenting an outer container opening (12), in which the inner container (2) is arranged Completely inside the outer container (7), the dispensing section (5) extends into the outer container nozzle (11) and the dispensing section (5) is connected to the outer container nozzle (11) in a watertight manner with respect to to the outside atmosphere , in which the valve (10) allows a connection of the space (13) located between the inner container (2) and the outer container (7) to the outside atmosphere, in which the outer container (7) at its opposite end to the outer container shoulder (9) and the inner container (2) at its opposite end to the inner container shoulder (4) are closed configuring a single common weld bead, characterized in that the inner container envelope (3) has a radial pleat (14) and the inner container shell (3) is configured to overlap with itself in the area of the radial pleat (14).

Description

DESCRIPTION

Container packaging and procedure for its manufacture

Technical field

The invention relates to the container package.

State of the art

Container packages are known from the state of the art which are composed of an essentially dimensionally stable but elastically deformable outer container and a plastically deformable inner container, arranged in this outer container. The inner container receives the filling product. The dimensional stability of the outer container is selected so that after compressing the outer container, it is deformed back to its original shape. The inner container is made of a plastically deformable material, so that it bends almost completely under the effect of pressure and can therefore also be emptied properly. At the same time, the outer container retains its aesthetically pleasing shape.

Document DE 4027 539 A1 discloses a container, in particular a squeezable bottle, with an essentially dimensionally stable, but elastically deformable outer container, within which an easily deformable inner container is arranged. In this regard, a closure closes the space between the inner and outer container. The closure has, among other things, a sealing lip through which air can flow into the space as soon as the process of removing the contents of the tube has been completed. This ensures that the outer container reverts to its original shape.

The object of JP H02-258 563 A is a squeezable container for dispensing liquids, in particular mayonnaise, comprising an inner container and an outer container. The outer container retains its original shape regardless of the amount of filler removed. A valve is inserted into the outer container wall through which air can enter an air chamber arranged in the outer container.

From documents US 4,760,937 A, US 2006/0226171 A1, US 2,777,612 A and DE 69700069 T2 other variants of the embodiment of tubes can be deduced with a dimensionally stable outer container, an inner container arranged in the outer container and which it contains the product and a valve arranged on the outer container wall, which allows air to penetrate into the area between the outer and inner container.

Known packages have the disadvantage that a filling of the packages is only possible by introducing the filling product into the inner container through the extraction opening. This does not represent a satisfactory solution, since when filling the inner container to empty the air displaced from the interspace by the filling, the valve must be traversed in the opposite direction to its intended opening direction. Furthermore, none of the known packages can guarantee a complete or at least almost complete extraction of the filling product. JP H078242 presents a container package according to the preamble of claim 1.

Despite the solutions known from the state of the art, there is still the need for container packages that can be filled in a simple way and that, even after emptying, have a constant, aesthetically pleasing external shape and that can be emptied almost completely .

Representation of the invention

Here the invention applies. A container must be made available which can be filled in a simple way, which has a constant and aesthetically pleasing outer shape even after emptying and which can be almost completely emptied. This object is achieved according to the invention by a container package according to independent claim 1. Further advantageous aspects, details and configurations of the invention appear from the dependent claims, the description and the drawings.

The present invention provides a container package having a plastically deformable inner container, having an inner container shell and an inner container shoulder for receiving a filling product. The inner container shoulder features a dispensing section that features a dispensing opening. The container package further comprises an elastically deformable outer container, having an outer container shell, an outer container shoulder and at least one valve, wherein the outer container shoulder presents an outer container nozzle having a container opening. Exterior. The inner container is completely arranged within the outer container, the dispensing section extends into the outer container nozzle, and the dispensing section is connected to the outer container nozzle in a sealed manner from the outside atmosphere. The valve allows a connection of the space between the inner container and the outer container to the atmosphere Exterior. The inner container shell has a radial pleat and is configured to overlap itself in the area of the radial pleat.

The valve provided according to the invention is preferably configured as a one-way valve and in such a way that air can enter the space between the inner container and the outer container from the outside when, after removal of the filling product and reduction of the Manually applied pressure force, for example, the outer container reverts to its original shape and thus generates a depression in the space between the inner container and the outer container.

By applying pressure to the outer container, e.g. ex. By squeezing the container package, when the container package is full or only slightly emptied, the filling product is immediately compressed into the inner container and removed from the container package through the dispensing opening of the dispensing section of the inner container shoulder . If a larger quantity of filling product has already been extracted from the container, then due to an effect of pressure from the outside, the air located in the space between the inner and outer container is compressed, so that it can no longer be escaping through the valve, compresses the inner container, whereby the filling product moves in the direction of the dispensing opening of the dispensing section of the inner container shoulder and out of it.

In the course of emptying the container, the plastically deformable inner container folds more and more while reducing its volume, while the space between the inner and outer container is increasingly filled with air. Thus, the outer shape of the package remains essentially the same throughout the entire period of use, regardless of the volume of the respective remaining amount of filler.

Due to the dimensional stability of the outer container, the container container according to the invention retains its original, aesthetically pleasing shape throughout its useful life and, thanks to its flexible, plastically deformable inner container, it ensures complete extraction of the filling product.

According to the invention, the inner container shell has a radial fold and is configured to overlap with itself in the area of the radial fold. Due to the radial crease of the inner container, it presents an excess of wall material at the resulting fold edge. Thanks to the excess material on the folding edge, it is guaranteed that the inner container can change its shape completely and at will, starting with the first extraction process, following the pressure acting from the outside. Due to the excess wall material available for any wall deformation, the inner container can take on essentially any conceivable wrinkled shape and thus ensures that even the smallest amounts of remaining filler can be essentially completely removed and the container container can be completely emptied.

The excess material on the collapsible edge of the inner container and the valve provided on the wall of the outer container also cooperate in such a way that a depression is not created in the inner container during an extraction process that ends with a reduction in pressure that it acts from the outside. Consequently, it is ensured that no air enters the inner container and, therefore, oxygen that oxidizes the filling product, nor moisture that changes the content.

According to a preferred embodiment, the area in which the inner container shell overlaps itself due to its radial fold has an extension in the direction of a main axis of at least 10% of the total extension of the outer container shell. inner container in the direction of the main axis, in which the main axis A extends centrally through the dispensing section.

The main axis of the container package is generally defined so that it extends parallel to the wall of the dispensing section of the inner container shoulder and centrally traverses its dispensing opening. The dispensing section of the container packages is usually configured essentially as a hollow vertical circular cylinder. In this case, the main axis of the container container represents the central axis of symmetry of this circular cylinder. The term "major axis" should also be understood for dispensing sections of different shapes such that the axis traverses the dispensing section centrally and parallel to the wall of the dispensing section. Since the dispensing section is usually arranged centrally relative to the inner container shoulder, the main axis generally represents an axis of rotation of at least double symmetry for the entire container container.

A radial fold, in which the area in which the inner container shell overlaps itself, has an extension in the direction of a major axis of at least 10% of the total extension of the inner container shell in the direction of the main axis, ensures that sufficient wall material is present so that the inner container, starting with the first extraction process, can modify its shape completely and at will, following the pressure acting from the outside.

In a particularly preferred manner, the area in which the inner container shell overlaps itself due to its radial fold has an extension in the direction of the main axis of at least 20% of the full extent of the inner container shell in the direction of the main axis. Consequently, an excess of additional wall material is available, whereby the inner container can modify its shape completely and at will from the first extraction process following the pressure acting from the outside.

The filler is preferably a paste, a cream, a gel or a liquid.

Preferably, it is provided that the air-tight connection of the dispensing section with the outer container nozzle is made by interlocking. Such an interlocking connection can be achieved by all the specific devices known to the person skilled in the art. For example, thus on the inner side of the outer container nozzle a retaining groove can be provided, in which the corresponding partially circular rim-like projections provided on the outer side of the dispensing section engage as retainers. Thanks to this connection of the outer container and inner container, it is possible to introduce the inner container into the outer container already before filling with filling product. Therefore, filling can be done from the end of the inner container opposite the inner container shoulder, which is still open accessible at this time. Only after filling are the inner and outer containers closed, in particular welded, into two, preferably one, working steps.

The inner container is closed at its end opposite the inner container shoulder by welding an edge area of the inner container shell. The outer container is also closed at its end opposite the outer container shoulder by welding an edge area of the outer container shell.

According to the invention, the closure of the outer container and inner container is carried out at their ends opposite the outer container shoulder or the inner container shoulder in a single working step, configuring a single common weld bead.

The dispensing section having the dispensing opening is preferably configured in one piece with the inner container shoulder. A one-piece configuration of the dispensing section and the inner container shoulder brings advantages in terms of manufacturing technology. In this embodiment, the inner container shoulder is connected to the inner container shell in a known manner, for example by welding. But the inner container shoulder can also be configured in one piece with the inner container shell.

In embodiments where the inner container shoulder and inner container shell are not manufactured in one piece, but the inner container shoulder is fixedly connected to the inner container shell, the inner container shoulder and the inner container shell can also be made of different materials. If the dispensing section and the inner container shoulder are also not configured in one piece, but are only connected to each other in the course of the manufacturing process, then the dispensing section and the inner container shoulder can also be manufactured in principle. of different materials.

Plastic, in particular plastic laminate, is used especially preferably for the configuration of the dispensing section, the inner container shoulder and the inner container shell. On the one hand, the mentioned materials present favorable properties during the manufacturing process and, on the other hand, they advantageously provide the plastic deformability of the inner container shell that is desired for the discharge of the filling product. According to a preferred embodiment, the entire inner container is made of plastic, in particular of a plastic laminate. The inner container is particularly preferably equipped with a barrier layer on its inner side, wherein the barrier layer is preferably formed from aluminum or SiOx. A barrier layer prevents the penetration in particular of oxygen and water vapor.

The outer container nozzle having the outer container opening is also preferably configured in one piece with the outer container shoulder. A one-piece configuration of the outer container nozzle and outer container shoulder has advantages in terms of manufacturing technology. In this embodiment, the outer container shoulder is connected to the outer container shell in a known manner, for example by welding.

Preferably, the container package is equipped with a closure element, in which the closure element is preferably configured as a plastic molding. The manufacture of closure elements as plastic molded parts is established and can therefore be carried out easily and inexpensively.

In a manner known to the person skilled in the art, the outer container nozzle is usually provided with an outer thread. In this case, the closure element has an internal thread that corresponds to the external thread of the outer container nozzle, whereby a simple closure of the container container is made possible by screwing the closure element onto the outer container nozzle.

The inner container is preferably equipped with a liner on its inner side. In this regard, it may be the oxygen and water absorbing coatings known per se. This coating can also be provided in addition to the barrier layer already mentioned.

Equally preferred are embodiments according to which the outer container is made of plastic, in particular of a plastic monomaterial or of a plastic laminate. Polyethylene and in particular HDPE are especially preferred. On the one hand, the mentioned materials exhibit favorable properties during the manufacturing process and, on the other hand, they advantageously provide the elastic deformability of the outer container wall that is desired to obtain dimensional stability. The use of a plastic monomaterial is associated with the special advantage that the outer container can be extruded into a flexible tube.

According to a particularly preferred embodiment of the present invention, the outer container is an outer tube and the inner container is an inner tube and, therefore, the entire container package is a tube.

The present invention also comprises a process for manufacturing a container package as described above according to claim 7, wherein the process comprises the steps:

a) manufacturing a plastically deformable inner container, having an inner container shell and an inner container shoulder, wherein the inner container shoulder features a dispensing section having a dispensing opening, and making an outer container elastically deformable, having an outer container shell, an outer container shoulder, and at least one valve, wherein the outer container shoulder features an outer container nozzle having an outer container opening,

b) radial folding of the inner container shell, in which the inner container shell overlaps itself in the area of the radial fold,

c) introduction of the inner container into the outer container, so that the inner container is fully arranged within the outer container and the dispensing section of the inner container shoulder extends into the outer container nozzle,

d) establishment of a watertight connection with respect to the outside atmosphere of the dispensing section with the outer container nozzle,

e) introduction of a filling product into the inner container,

f) closing the inner container at an edge area of the inner container shell opposite the inner container shoulder, and closing the outer container at an edge area of the outer container shell opposite the outer container shoulder.

Of course, the radial folding of the inner container shell can be done before or after the manufacture of the elastically deformable outer container. It should only be ensured that the folding of the inner container wrap is carried out before the insertion of the inner container into the outer container.

In addition to the stay connection with respect to the outer atmosphere of the dispensing section to the outer container nozzle, the inner container is preferably connected to the outer container, in which the connection is preferably made by interlocking. Thanks to a similar connection of the outer container and inner container, it is possible to insert the inner container into the outer container already before filling with filling product. Filling can then be done from the end of the inner container opposite the inner container shoulder, which is still open accessible at this time. The inner and outer containers are only closed after filling.

The closure of the inner container is performed by welding the edge area of the inner container shell opposite the inner container shoulder. It is also required to close the outer container by welding the edge area of the outer container shell opposite the outer container shoulder. Container wall welding is a long-established process, which ensures a secure and permanent closure and can be carried out simultaneously inexpensively.

According to the invention, the outer container and the inner container are closed at their edge areas opposite the outer container shoulder or the inner container shoulder, forming a single common weld bead. By simultaneously closing the outer container and inner container by configuring a common weld bead, a labor step can be saved, resulting in corresponding time and cost savings.

According to another preferred embodiment, the radial fold of the inner container shell is made in such a way that the area in which the inner container shell overlaps itself due to its radial fold has an extension in the direction of a main axis A of at least 10% of the total extension of the inner container shell in the direction of the main axis A, where the main axis A extends centrally through the dispensing section. In a particularly preferred manner, the radial folding of the inner container shell is made in such a way that the area in which the inner container shell overlaps with itself due to its radial fold has an extension in the direction of the main axis A of at least 20% of the total extension of the inner container shell in the direction of the main axis A. By means of a radial fold, in the that the area in which the inner container shell overlaps itself has an extension in the direction of a main axis of at least 10%, especially preferably at least 20%, of the total extension of the inner container shell in the direction of the main axis, it is ensured that enough wall material is present so that the inner container, starting with the first extraction process, can modify its shape completely and at will, following the pressure acting from the outside .

Other improvements, advantages and possibilities of application of the invention also appear from the following description of exemplary embodiments and from the figures.

Methods of carrying out the invention

The invention is to be explained in more detail below by means of an exemplary embodiment in connection with the drawing. Figure 1 shows a schematic representation of a vertical section through a container according to the invention.

The container container 1 comprises an inner container 2 which is plastically deformable to receive a filling product. The inner container 2 has an inner container shell 3 and an inner container shoulder 4, wherein the inner container shoulder 4 has a dispensing section 5 having a dispensing opening 6. The inner container shell 3 is made of a plastic laminate that can be permanently and easily deformed plastically. The inner container shoulder 4 and the dispensing section 5 are formed in one piece from a plastic.

Furthermore, the container 1 comprises an elastically deformable outer container 7 which is made of a plastic material. The outer container 7 comprises an outer container shell 8, an outer container shoulder 9 and at least one valve 10. An outer container nozzle 11, having an outer container opening 12, is molded onto the outer container shoulder 9 .

As can be seen from Figure 1, the inner container 2 is fully disposed within the outer container 7. The dispensing section 5 of the inner container shoulder 4 extends into the outer container nozzle 11 and is connected to the nozzle. of outer container 11 in a sealed manner with respect to the outer atmosphere.

The valve 10 passes through the outer container shell 8 and allows a connection of the space 13 located between the inner container 2 and the outer container 7 to the outer atmosphere. The valve 10 is preferably configured as a one-way valve and in such a way that air can enter from the outside into the space between the inner container 2 and the outer container 7 when, after removal of the filling product and reduction of the force of pressure applied manually, for example, the outer container 7 assumes its original shape and thus generates a depression in the space 13 between the inner container 2 and the outer container 7.

The inner container shell 3 has a total extension L in the direction of a main axis A of 20 cm. The inner container shell 3 has a radial fold 14 and is configured to overlap with itself in the area of this radial fold 14. The area in which the inner container shell 3 overlaps itself has an extension W in the direction of a main axis of 2 cm, that is, 10% of the total extension of the inner container shell 3 in the direction of the main axis A. The additional material of the inner container shell present in the area of the radial fold 14, going beyond the material actually necessary to receive the intended filling product, it allows a permanent plastic deformation, especially efficient and without problems of the inner container when the filling product is removed. When applying an external pressure by manually compressing the container container, a deformation of the inner container occurs, which is preserved even after the end of the application of pressure.

Until the container 1 is filled with the filling product, the end of the inner container 2 opposite the shoulder of the inner container 4 is open and the inner container 2 is in the shape of a circular cylinder. After filling the container 1, the end of the inner container 2 opposite the shoulder of the inner container 4 is closed by welding. The outer container 7 and the inner container 2 are closed by a common weld bead.

List of references

1. Container container

2. Inner container

3. Inner container enclosure

4. Inner container shoulder

5. Dispensing section

6. Dispense opening

7. Outer container

8. Outer container enclosure

9. Outer container shoulder

10. Valve

11. Outer container nozzle

12. Outer container opening

13. Space between inner container and outer container

14. Radial fold

15. External thread

A. Main shaft

L. Total expansion of the inner container shell in the direction of the main axis A W. Expansion of the area where the inner container shell overlaps itself

Claims (10)

1. Container package (1) that presents a plastically deformable inner container (2), having an inner container shell (3) and an inner container shoulder (4) for receiving a filling product, wherein the inner container shoulder (4) has a section of dispenser (5) having a dispensing opening (6), an elastically deformable outer container (7), having an outer container shell (8), an outer container shoulder (9) and at least one valve (10), wherein the outer container shoulder (9) has a outer container nozzle (11) presenting an outer container opening (12), wherein the inner container (2) is disposed entirely within the outer container (7), the dispensing section (5) extends into the nozzle of the outer container (11) and the dispensing section (5) is connected to the outer container nozzle (11) in a sealed manner from the outside atmosphere, wherein the valve (10) allows a connection of the space (13) located between the inner container (2) and the outer container (7) to the outer atmosphere, wherein the outer container (7) at its end opposite the outer container shoulder (9) and the inner container (2) at its end opposite the inner container shoulder (4) are closed, configuring a single common weld bead, characterized by what The inner container shell (3) has a radial pleat (14) and the inner container shell (3) is configured to overlap with itself in the area of the radial pleat (14). Container package (1) according to claim 1, characterized in that the watertight connection with respect to the external atmosphere of the dispensing section (5) with the outer container nozzle (11) is carried out by interlocking. Container package (1) according to one of claims 1 or 2, characterized in that the inner container (2) is made of plastic, in particular of a plastic laminate, in which the inner container (2) is equipped on its inner side preferably with a barrier layer, in particular with an aluminum or SiOx barrier layer. Container package (1) according to one of Claims 1 to 3, characterized in that the outer container (7) is made of plastic, in particular of a plastic monomaterial or a plastic laminate. Container package (1) according to one of Claims 1 to 4, characterized in that the area in which the inner container shell (3) overlaps with itself due to its radial fold (14) has an extension in the direction of a major axis A of at least 10% of the total extension of the inner container shell (3) in the direction of the major axis A, in which the major axis A extends centrally through the dispensing section (5). Container package (1) according to claim 5, characterized in that the area in which the inner container shell (3) overlaps with itself due to its radial fold (14) has an extension in the direction of the axis main A of at least 20% of the total extension of the inner container shell (3) in the direction of the main axis A. 7. Process for the manufacture of a container container (1) according to claims 1 to 6, with the steps: a) Manufacture of a plastically deformable inner container (2), which has an inner container shell (3) and an inner container shoulder (4), wherein the inner container shoulder (4) has a dispensing section ( 5) presenting a dispensing opening (6), and manufacturing an elastically deformable outer container (7), having an outer container shell (8), an outer container shoulder (9) and at least one valve (10 ), wherein the outer container shoulder (9) has an outer container nozzle (11) having an outer container opening (12), b) radial folding of the inner container shell (3), in which the inner container cover (3) overlaps itself in the area of the radial fold (14), c) introduction of the inner container (2) into the outer container (7), so that the inner container (2) is completely arranged inside the outer container (7) and the dispensing section (5) of the inner container shoulder ( 4) extends into the outer container nozzle (11), d) establishment of a watertight connection with respect to the outside atmosphere of the dispensing section (5) with the outer container nozzle (11), e) introduction of a filling product into the inner container (2), f) closing the inner container (2) in an edge area of the inner container shell (3) opposite the inner container shoulder (4), and closing the outer container (7) in an edge area of the shell of outer container (8) opposite the outer container shoulder (9), in which the outer container (7) in its The edge zone opposite the outer container shoulder (9) and the inner container (2) in its edge zone opposite the inner container shoulder (4) are closed by configuring a single common weld bead. 8. Method for the manufacture of a container container (1) according to claim 7, characterized in that in addition to the watertight connection with respect to the external atmosphere of the dispensing section (5) with the outer container nozzle (11) , the inner container (2) is connected to the outer container (7), in which the connection is preferably made by interlocking. 9. Method for the manufacture of a container package (1) according to one of claims 7 or 8, characterized in that the radial fold of the inner container shell (3) is made so that the area in which it is Inner container shell (3) overlaps with itself due to its radial fold (14) presents an extension in the direction of a main axis A of at least 10% of the total extension of the inner container shell (3) in the direction of the main axis A, in which the main axis A extends centrally through the dispensing section (5). 10. Method for the manufacture of a container container (1) according to claim 9, characterized in that the radial fold of the inner container envelope (3) is made in such a way that the area in which the inner container envelope ( 3) overlaps with itself due to its radial fold (14) has an extension in the direction of the main axis A of at least 20% of the total extension of the inner container shell (3) in the direction of the main axis A .