RU97710U1 - PACKAGING CONTAINER, IN PARTICULAR FOR FOOD - Google Patents

Abstract

 1. A packaging container (11) for food products, including a packaging container (1) in the form of a cup, made by thermoforming from a film with an initial thickness (31) of an undeformed film, the packaging container (1) along its middle longitudinal axis (2) has a thin-walled, essentially conical side wall (3), which in the first end region (4) is closed by the bottom (8), and on the opposite second end region (5) has an opening (6) with a circumferential sealing edge (7), as well as shell-shaped bunks the bottom part (10), covering the packaging container (1), at least 70% of its height, characterized in that the sealing edge (7) has a wall thickness (32), which compared to the original thickness (31) undeformed film is reduced by a value in the range from 2 to 25%, in particular from 6 to 20%, moreover, in a plane located perpendicular to the middle longitudinal axis (2), as well as in an unloaded and ready to use condition of the packaging container (11) inner diameter of shell-like outer part (10) poppy the maximum is 1.5% smaller and the maximum 2.5% larger than the outer diameter of the packaging container (1) in the same plane. ! 2. A packaging container (11) according to claim 1, characterized in that the edge (7) intended for sealing has a wall thickness (32), which, compared to the original thickness (31) of the undeformed film, is reduced by a value in the range of 8 up to 17%, in particular from 10 to 14%. ! 3. A packaging container (11) according to claim 1 or 2, characterized in that the packaging container (11), when loaded, evenly acts on the container

Description

The utility model relates to a packaging unit for food products, including a packaging container in the form of a cup, as well as a shell-shaped outer part covering at least 70% of its packaging height, and the utility model described in paragraph 1.

Packaging containers made of polymer material in large quantities are used, in particular, in the field of packaging of food products, such as, for example, dairy products or ready-made meals, such as soups, or bulk products, such as granola. Such cups of polymer material are most often made with a body more or less tapering down from a polymer film by deep drawing or similar methods. To simplify printing and to provide additional mechanical stability, such cups are often reinforced with a shell made of a polymer material or cardboard. The resulting packaging unit in most cases has sufficient strength for normal use, often, however, with a disproportionately high material consumption. Such cups are often used without a shell, and in order to achieve the high mechanical stability necessary, for example, for transportation or use, a high material consumption and associated increased production costs are required.

The utility model is based on the task of providing a packaging unit including a packaging container with an outer part located in the region of its shell, which, at low material consumption, still has high mechanical strength.

The problem of the utility model is solved due to the fact that the edge intended for sealing has a wall thickness, which, compared with the undeformed initial film thickness, is reduced by a certain amount in the range from 2% to 25%, in particular, from 6% to 20% , and in a plane perpendicular to the middle longitudinal axis, as well as in the unloaded and ready to use state of the packaging unit, the inner diameter of the shell-like outer part is on average no more than 1.5% less and no more than 2.5% more outwardly diameter of the packaging container in the same plane.

An unexpected advantage is that in this way a packaging unit can be obtained in which the overall strength of the entire packaging unit can be increased compared to traditional packages. Due to the sealed edge intended for sealing the edge connected to the sealing lid, a higher tear resistance is achieved compared to the sealing seam when the opening movement is performed. This makes it possible to improve the detachment and separation of the sealing joint, because this also makes it practically possible to avoid tearing or, accordingly, tearing off the edge intended for sealing from the casing of the packaging container. By reducing the wall thickness in this area, a densification of the structure is achieved and, due to this, also an improved internal bond between the individual chains of molecules. This is an advantage precisely when, in order to save raw materials, the packaging container is made of a film with small initial wall thicknesses. In addition, due to the narrow tolerances of the outer part in comparison with the shell of the packaging container in the vertical direction, a sufficiently high compression force can be perceived to prevent damage to individual packaging units after filling them when stacking on top of each other during storage and / or transportation. In particular, when transporting filled packaging units, when it is usually desirable to stack pallets in stacks with 10 or more rows in height, due to the high mechanical stability of the packaging unit, a large stack height can be obtained. Due to the small differences in the diameters of the shell-like outer part and, accordingly, the packaging container, a prestressing is transmitted to the packaging container, acting radially from the shell-like part over the entire surface coated with the shell-like part and over the entire volume. Thanks to this prestressing, external forces can be better perceived and, accordingly, these forces can be better distributed, since due to this, bending under the action of a longitudinal load and, therefore, failure of the packaging unit structure occurs only when a high pressure force is achieved. Due to this radial bearing of the casing on the outside, the wall thickness of the casing can also be further reduced in the support points facing each other, and thus material is further saved.

Due to the tight fit of the shell-like outer part to the packaging container, there is also the advantage of additional friction between the parts of the walls of these elements, due to which there is the effect of mutual support and, accordingly, reinforcement, and due to this, the overall strength also increases. The increased strength gives, along with the advantages of stacking and, accordingly, the transportation of the packaging unit, also the advantages of using an already filled packaging unit, since with increasing compression resistance, the resistance to the forces acting in the radial direction, which arise, for example, during gripping, also increases. packaging unit during laying on shelves for sale, or by end users. Due to this, it is possible to reduce the number of damage to packaging containers due to tearing or tearing in general, due to which defective and, thereby, costs can be reduced. Other advantages also arise when filling and, accordingly, sealing the finished filled packaging unit, since here a better perception of the forces acting on the packaging unit is possible, and due to this, the amount of rejects can also be reduced.

In the embodiment according to claim 2 of the utility model, the advantage is that an individual adjustment of the degree of compaction can be set at certain limits, and therefore the strength of the sealing edge can be precisely adjusted depending on the respective sealing process.

But the embodiment according to claim 3 is also preferable, because due to the small compression displacement that occurs during loading, neither plastic deformation nor bending occurs, and therefore no damage to the packaging container. After removal of the force acting from the outside, elastic restoration of the packaging unit can occur, which does not get damaged.

According to one of the embodiments according to claim 4, the packaging unit due to low deformation has improved consumer properties and, accordingly, due to the small displacement of compression, plastic deformation and, therefore, destruction of the packaging unit is prevented.

The embodiment according to claim 5 is also preferred, because it can be used to create a high friction force between the packaging container and the shell-like outer part, and, in addition, the reverse effect that could lead to structural weakening due to too narrow the packaging container is prevented. and the resulting contact of the shell-shaped outer part and the packaging container is no longer on the entire surface, for example, due to the formation of waves.

An embodiment according to claim 6 is also possible, because a sufficiently small distance between the packaging container and the shell-like outer part can be obtained. Due to this, under load, wave-like deformation of the packaging container, which could occur at too great a distance, can be prevented, due to which the overall stability of the packaging unit can be increased.

The embodiment according to claim 7 is also possible, because with it, a higher protection against slipping, in particular against rolling the packaging container relative to the shell-like outer part, is achieved.

But the embodiment according to paragraph 8 of the formula is also favorable, because with its help simple stiffness is achieved and high consumer properties of the packaging unit as a whole are improved.

Using the embodiment according to paragraph 9 of the formula, in the bottom region not only an emphasis can be created for stacking the same packaging units into each other, but, in addition, a so-called spring bottom can be created. Due to the radial displacement of the wall section located mainly around the entire perimeter in the direction of the middle longitudinal axis, when interacting with the bottom, the axial deformation of the packaging container is minimized in the direction of its middle longitudinal axis. Due to this, when interacting with the outer part covering the packaging container, alignment of tolerances in the direction of the middle longitudinal axis can occur and, thereby, optimal transmission of force in the axial direction can be ensured.

The embodiment according to claim 10 is also preferable, since in this way a high strength is achieved in the step region, which allows optimal transfer of forces even with high stacking forces. This is because the wall sections adjacent to the step are located at a greater radial distance from the shell-like outer part and due to this mutual support is impossible.

According to one of the embodiments described in paragraph 11 of the formula, the strength of this section of the walls along its longitudinal extent in the direction of the average longitudinal axis can be easily adapted to various application conditions. Thereby, the spring behavior of this wall section with respect to the outer part made relatively stiff in the axial direction is set and, despite this, with high material consumption, high strength is achieved.

In this case, the embodiment according to paragraph 12 of the formula turns out to be favorable, because in this way the packaging container in the region of its shell can only perform the sealing function for the foodstuff stored in it, and the mutual bearing and, accordingly, the damping of the load occurs directly through the shell-like outer part in the axial direction.

According to one of the preferred improved embodiments according to paragraph 13 of the formula, it is possible to support for the shell-shaped outer part facing the thickened edge of the lower edge. In addition, due to the thickened edge, an elastic element is created, which, within certain limits, can compensate for the size tolerances of the shell-like outer part. Thanks to this, an improved load transfer is achieved, starting from the edge intended for sealing through the shell-like outer part to the supporting surface. When interacting with the sealing edge, the outer part can be fixed under load in the clamped position between the thickened edge and the sealing edge. In this case, the outer part serves as a support, and the cup-shaped inner part with its shell and bottom performs the sealing function.

But the embodiment according to claim 14 is also favorable, because in this case the course of springing and the associated elasticity of the thickened edge under axial loading can be specified within certain limits.

Another form of implementation is described in paragraph 15 of the formula. Its advantage is that the shell-shaped outer part is firmly fixed to the packaging container in a ready-to-use position by means of a thickened edge, and is effectively protected against slipping in the direction of the middle longitudinal axis, and thereby, especially under load, is securely fixed to the packaging container.

The embodiment according to claim 16 is also possible, because in this way the compressive forces acting on the sealing edge are directed directly to the shell-shaped outer part, and thus, deformation of the upper region of the packaging container can be prevented.

Another embodiment is also advantageous - according to claim 17, because in this way an additional effect of supporting the packaging container due to the shell-shaped outer part is achieved and, in particular, bending and, accordingly, deformation in the highly loaded region of the bottom can be prevented.

Also favorable is the embodiment according to paragraph 18 or 19 of the formula, since it is used to achieve the optimal ratio between the amount of raw material used and the mechanical properties obtained, in particular, strength.

The embodiment according to claim 20 or 21 is also advantageous, since in its case, in particular, for a large compared to other areas of the surface of the shell, only a small consumption of material is required, and thus, the need for raw materials can be reduced, as well as as a consequence, the cost.

According to another embodiment, according to paragraph 22 of the formula, in the region of the shell, while maintaining sufficient tightness in combination with the load-transmitting outer part, sufficient stability is achieved with significant savings in raw materials.

In this case, an embodiment according to claim 23 is also possible. Due to the selected thickness of the outer part, a good ratio of strength and material is obtained, so that the packaging unit as a whole can be manufactured more economically.

Using the improved embodiment of claim 24, it is possible to more easily cleanly separate the packaging container and the shell-like outer part.

In the embodiment of claim 25, the advantage is that there is only a slight decrease in the strength of the packaging unit in its circumferential direction, and if necessary, despite this, a simple separation of the shell-like part from the packaging container is possible.

Thanks to the improved embodiment according to paragraph 26 or 27 of the formula, it is possible to optimally select the ratio of the consumed amount of the polymer film raw material and the amount of raw material for the shell-like outer part in each particular application, and thereby manufacturing the packaging unit at a minimal cost.

The embodiment according to paragraph 28 of the formula is also advantageous, since this guarantees the possibility of using a packaging container for food products and, in addition, the possibility of its manufacture at low cost.

Moreover, the embodiment according to paragraph 29 of the formula is favorable, because it becomes possible to use inexpensive polymer films, and as a result, the cost of manufacturing a packaging container may remain low.

An embodiment according to paragraph 30 of the formula is also possible, since with its help, on the one hand, high strength and good thermal insulation can be achieved, and on the other hand, optimal protection of the contents of the packaging container from light.

Another preferred embodiment is described in paragraph 31 of the formula, since with the possible absorption of moisture by the cardboard material, the fibers swell in their radial direction, and thus there is no negative effect on the strength, as this could happen if they increase in their longitudinal direction and caused this possible sliding of the shell-like outer part from the packaging container.

The embodiment according to claim 32 is also preferable, since in its case the material consumption, and therefore the costs, can remain low, and despite this, high strength and, therefore, good consumer properties of the entire packaging unit are achieved.

According to the embodiment of claim 33, it is possible to manufacture an inexpensive shell in a simple manner. When using a material that shrinks under the influence of heat, internal adaptation of the mold to the packaging container may occur. Due to this, the mutual bearing is significantly improved.

Finally, the embodiment described in claim 34 is possible. Moreover, due to the shell-like outer part, good thermal insulation can be achieved with high strength and low material consumption.

For a better understanding of the utility model, it is explained in more detail using the figures below.

Shown respectively in a schematic simplified image:

Figure 1 is a first embodiment of a packaging unit consisting of a packaging container and a shell-shaped outer part, in a separate image;

Figure 2 is a front view of the packaging unit shown in figure 1;

Figure 3 - packaging unit shown in figures 1 and 2, a top view of the section along lines III-II shown in figure 2;

4 is another embodiment of a packaging unit;

5 is a control system of the compression force perceived by the packaging unit and, accordingly, the compression stroke;

6 is a schematic diagram of the force-displacement, which was built using the system shown in figure 5;

7 is another packaging container, axial section;

Fig. 8 is another embodiment of a packaging unit, front view;

Fig.9 is another form of implementation of the packaging unit;

Figure 10 is another embodiment of a packaging unit with a shoulder made at the bottom;

11 is a possible embodiment of a shell-shaped outer part assembly on a packaging container.

As an introduction, it should be noted that in the various forms of implementation described, the same parts are denoted by the same positions and, accordingly, the names of the components, and the features contained in the entire description can be transferred in meaning to the same parts denoted by the same positions and , respectively, the names of the components. The indications of positions selected in the description, such as, for example, at the top, bottom, bottom, side, etc., also refer to the figure directly described and depicted, and when changing the position, they should be transferred to the new position in meaning. In addition, individual features or combinations of features of the various embodiments shown or described may themselves be independent utility models or solutions proposed by this utility model.

1-3, a first embodiment of a packaging unit 11 is shown, wherein the packaging container 1 and the shell-shaped outer portion 10 are shown separately from each other.

The packaging container 1 extends along the middle longitudinal axis 2, and its thin-walled side wall 3 has a conical shape from the first end region 4 to the second end region 5. The second end region 5 has an opening 6, which is limited by the circumferential sealing edge 7. The first end region 4 is closed with the bottom 8.

The packaging container 1 can be made, for example, by deep drawing, or tight drawing, or similar methods. In this case, it is possible to use any materials that are deformed by thermoforming, and films of a polymeric material are preferably used. In the undeformed state, the film has an initial thickness of 31. It is shown in FIG. 2 by a dashed line in the region of the edge 7 to be sealed. For the deformation process, the film is heated until it acquires plastic viscosity and, thus, the molding process can be carried out . The temperature should be selected according to the material used. During the molding process, deformation of the sealing edge 7 also occurs, from the undeformed initial thickness 31 to the reduced wall thickness 32. When this occurs, the compaction of the material, thereby increasing strength with a reduced wall thickness 32. But besides this, close to the surface layers intended for sealing the edges, when viewed in the axial direction, are compressed and, accordingly, compressed, so that a more durable and smooth surface can be obtained. The degree of reduction of the final wall thickness 32 of the edge 7 intended for sealing compared to the undeformed initial film thickness 31 is in the range from 2% to 25%, in particular from 6% to 20%. This range may also be from 8% to 17%, in particular from 10% to 14%.

It should be noted here that the external shape and, accordingly, the contour of the packaging container 1 and, correspondingly, the shell-shaped outer part 10 belonging to it should not be limited to the circular horizontal projection shown in Fig. 1, and the horizontal projection may, in accordance with the utility model, have for example, a quadrangular shape with rounded edges, or an oval shape, or the shape of a quadrangle with strongly rounded sides and, accordingly, corners, and the corresponding features of the utility model may be Renesa to such embodiments.

At least 50% of the perimeter of the amplification section 9 can be provided in the first end region 4. The amplification section 9 has a larger diameter, respectively, of a perimeter, than a portion of the side wall 3 immediately adjacent to it.

The reinforcement section 9 may take the form of a circumferential annular groove, however, the reinforcement section 9 may also have a slightly counter-conical shape to the packaging container shell.

Figure 1 also shows the shell-shaped outer part 10, which together with the packaging container 1 forms a packaging unit 11.

The shell-shaped outer part 10, like the packaging container 1, has a conical side wall 12 extending along the middle longitudinal axis 2. Moreover, the shell-shaped outer part 10 can be made of cardboard material or of a polymeric material.

Along the middle longitudinal axis 2, in particular with a shell-shaped outer part 10 made of cardboard material, an overlap portion 13 may be formed. The overlap section 13 may provide an inextricable connection, in particular an adhesive connection, of the parts of the shell 12, respectively, of the shell-like outer part 10, necessary to give a flat cut cardboard shape similar to a truncated cone.

It is also possible to directly adhere the parts of the shell-like outer part 10 to the side wall 3 of the packaging container 1, thereby also enhancing effects being achieved. This adhesive seam, which extends, at least in partial areas of the shell-shaped outer part 10, respectively, of the packaging container 1, can be made both in the direction of the middle longitudinal axis 2 and in the circumferential direction of the packaging unit 11. Also, adhesive seams are located at an angle to the middle longitudinal axis 2, or glue points located separately.

But instead of the overlap section 13, in particular, if the shell-shaped outer part 10 is made of polymeric material, it can also be made using an appropriate welding method an inseparable connection of both side surfaces extending at the height of the shell-like outer part 10, for example, in the form of a butt weld.

It should be noted that the packaging unit 11 proposed by the utility model, respectively, the packaging container 1 preferably has a net volume of less than 1.5 dm ³ . In preferred embodiments, the useful volume may be <0.75 dm ³ , in particular <0.5 dm ³ . Useful volumes of less than 0.3 dm ³ are also possible.

Figure 2 shows the packaging unit 11 in a front view.

A packaging container 1 is presented with a shell-shaped outer part 10 extending from a first end region 4 to a second end region 5 along a side wall 3 of the packaging container 1.

The shell-shaped outer part 10 is fixed on the amplification portion 9 and on the sealed edge 7 with a geometric closure.

According to the utility model, the diameter of the shell-like outer part 10 may be a maximum of 1.5% less than the diameter of the packaging container 1 at the same height and in a ready-to-use state. Moreover, this measurement is carried out in a plane directed perpendicular to the average longitudinal axis 2.

However, it is also possible that the diameter of the shell-like outer part 10 is a maximum of 1.2%, in particular a maximum of 0.8% less than the diameter of the packaging container 1.

If the diameter of the shell-like outer part 10 is at most 2.5% larger than the outer diameter of the packaging container 1, the effects that are preferred in the sense of the utility model are obtained. The inner diameter of the shell-like outer part can also be a maximum of 2.2%, in particular a maximum of 1.8% larger than the outer diameter of the packaging container 1, whereby high strength is also achieved. Figure 3 also shows a section by a plane III-III of the packaging unit 11.

Section III-III explains the relationship of individual diameters. The ratio of the diameters for better clarity is presented in a greatly enlarged form, not to scale.

One of the forms of implementation of the packaging unit 11 with an inner diameter of BB ‛of the shell-like outer part 10, which is larger than the outer diameter CC 'of the packaging container 1, is presented.

It turned out to be preferable when the diameter BB ', which corresponds to the inner diameter of the shell-shaped outer part 10, is at most 25% larger than the diameter CC ‛, which corresponds to the outer diameter of the packaging container 1.

These and all of the following diameter differences are the average values of any sections III-III, each of which is located in a plane perpendicular to the direction of the average longitudinal axis 2 of the packaging unit 11.

It is also preferable if the inner diameter BB ВВ of the shell-shaped outer part 10 is on average 2.2% higher than the outer diameter CC ^{‛of the} packaging container 1, since the friction between the packaging container 1 and the shell-shaped outer part 10 is improved, and thereby increases the strength of the packaging unit as a whole.

If the inner diameter of the explosive ^{‛of the} shell-shaped outer part 10 is on average 1.8% higher than the outer diameter of the CC‛ of the packaging container 1, then the advantage is that a high radial stress arises between the packing container 1 and the shell-shaped outer part, due to which, along with the effect of reinforcing stiffness in the direction of the middle longitudinal axis 2 and due to this better suitability for stacking, there is also a high resistance to forces acting in the radial direction, for example, compression or bending when gripping or handling the packaging container 11, and thereby improve consumer properties.

The reinforcement section 9 made in the first end region 4 may have a larger diameter than the inner diameter of the portion of the shell portion 10 adjacent to it.

But it is also possible (as shown in FIG. 3) that the inner diameter of the BB ^{‛of the} shell-shaped outer part 10 is on average 1.5% less than the outer diameter of the CC‛ of the packaging container 1, thereby creating the advantage of preventing too high radial forces that act on the part of the shell-like outer part 10 on the packaging container 1, and thereby warping, respectively, wave-like deformations of the packing unit 11 at the height of the shell-like outer part 10 and all mu its volume, even in an already unloaded state.

In another embodiment, it is possible that the inner diameter of the BB ‛of the shell-shaped outer part 10 is on average 1.2% maximum, in particular 0.8% maximum, less than the outer diameter CC ^{‛ of the} packaging container 1. Due to this, an optimal radial stress between the packaging container 1 and the shell-shaped outer part 10, thereby ensuring a firm fit of the shell-shaped outer part 10 on the packaging container 1 in the direction of the middle longitudinal axis 1, and thus, when using the packing unit 11 does not cause mutual relative displacement, but on the other hand, high resistance is provided to both the compressive forces and the forces acting in the radial direction.

Section III-III shown in FIG. 3 shows only one embodiment of the proposed utility model of the packaging unit 11, with an inner diameter of BB ‛of the shell-like outer part 10, which is larger than the outer diameter of CC ^{‛ of the} packaging container 1, and this diameter difference is for the best visibility presented in high magnification without respecting scale.

Figure 4 shows another embodiment of the packaging unit 11. However, in this case, due to the sufficiently small wall thickness, the components are shown for illustrative purposes with only one single line.

This example shows a packaging container 1, which has a hole 6 in the second end region 5, which is limited by the sealing edge 7. In the first end region 4, a bottom 8 is formed, which goes into the first wall section 14, which is made in the form of a counter-cone. But the first wall portion 14 may also be in the form of a cylinder at the height of the packaging container 1. Due to this, advantages are achieved when the shell-like outer part 10 is placed on the packaging container 1.

To the first wall portion 14, a side wall 3 substantially conical in the direction of the middle longitudinal axis 2 can be connected.

The packaging container 1 is surrounded on the outside by a shell-like outer part 10, in the same manner as described in connection with FIG. However, in accordance with the utility model, it is possible that in the region of the first wall portion 14, due to the counter-conical shape, the difference between the inner diameter of the shell-shaped outer part 10 and the outer diameter of the packaging container 1 increases, however, on average, the same diameter ratios , which are described in connection with figure 2, with the achieved benefits.

Here, the packaging container 1 has, in the region of its side wall 3 located near the bottom 8 of the side wall 3, offset from the side wall 3 in the direction of the middle longitudinal axis 2, the wall section 14, which in the distance from the bottom 8 in the direction of the open side of the end region 5 forms a step 33 side wall 3. The ledge 33 is located, most often, in a plane directed perpendicular to the middle longitudinal axis 2, and forms the so-called stop for stacking the same packaging units 11 into each other.

The wall section 14 has, starting from the step 33 in the direction of the bottom 8, various, in particular, decreasing wall thickness. Thus, this wall thickness of the wall portion 14 may be less than the undeformed initial film thickness 31 by an amount in the range from 75% to 45%, in particular from 70% to 55%. A section with a thickness reduced to a lesser extent is in the region of the step 33, and a section with a thickness reduced to a greater extent in the region of the bottom 8, respectively, of the reinforcement section 9.

In addition, it is possible that the parts of the bottom 8 form a reinforcing portion 9 extending around the perimeter of the packaging container 1. In this case, the amplification section 9 may have a larger perimeter than the inner diameter of the shell-shaped outer part 10 bordering on it.

According to an improved embodiment, the reinforcement section 9, respectively, the sealing edge 7 can form locking elements 15, 16 for geometrically locking the shell-shaped outer part 10. This provides additional protection against slipping of the shell-shaped outer part 10 relative to the packaging container 1.

The shell-like outer portion 10 may have an overlap portion 13 extending in the direction of the median longitudinal axis 2, which gives the packaging unit 11 additional resistance to bending. The plot. In this case, the overlap 13 may form a connection with a power circuit between the sections of the shell-like outer part 10.

But regardless of this, it is also possible that the packaging container 1 in the transition region between the bottom 8 and the side wall 3 has a radially thickened edge 34 protruding from the side wall 3. This thickened edge 34 can also serve to support the shell-like outer part 10, however, not perform the gain function described previously, like the gain section 9. The thickened edge 34 has a wall thickness which, in comparison with the undeformed initial film thickness 31, is in the range from 3% to 25%, in particular from 7% to 15%. Due to this, when interacting with the wall portion 14, a portion of the packaging container 1 that works like a spring bottom can be obtained. This greatly facilitates the insertion of the shell-shaped outer part 10 and additional fixation on the packaging container 10.

It should be noted here that the individual constituent parts of the individual embodiments can be transferred to the corresponding other embodiments, for example, the location of the reinforcement sections 9, respectively, the cross-sectional shape of the packaging container 11, so that these parts of the description can be appropriately transferred, even if In individual embodiments, no special reference has been made to this.

In addition, it is also possible that the outer diameter of the side wall 3 of the packaging container 1 with the inner space filled with the food product and about half the height between the bottom 8 and the sealing edge 7 is increased by an amount in the range from 0.01% to 1, 5% compared with its undeformed side wall 3. Due to this convexity of the side wall 3, an improved mutual fit of the side wall 3 and the outer part 10 is achieved.

Figure 5 shows the control system perceived by the packaging container 11 compressive forces, respectively, of the compression path.

For this, the packaging unit is loaded between two adjacent elements 17, 18 with the corresponding boundary surfaces by a compression force 19, which acts in the direction of the middle longitudinal axis 2 of the packaging unit 11, respectively, of the packaging container 1.

Measured, along with the applied compression force 19, the compression path 20, which is equal to the reduction of the initial distance between the two adjacent elements 17, 18.

Control occurs at a constant ambient temperature of 24 ° C. The adjacent element 18 is lowered at a constant reference speed of 10 mm per minute, and the required compression force 19 is determined.

Using an appropriate measuring sensor or transmitter, data is transmitted to a data processing device.

Figure 6 shows a schematic diagram of the force-displacement, which was built using the system shown in figure 5.

In this case, the compression force 19 is plotted along the Y axis, which is a function of the compression path 20 delayed along the X axis.

Presented in Fig.6 curve can be divided into three main sections.

Section 21 has, after bending near the zero point, an almost linear rise in compression force 19 over compression path 20. Up to a maximum compression force 22, the packaging unit 11 deforms uniformly under the action of the compression force 19. After this, a slight decrease in force is seen with an almost constant compression path in section 23, which should be attributed to the first partial bends. In the subsequent section 24, a smooth character is first seen with the compression path 20 increasing at a constant compression force 19, followed by a final decrease in the compression force due to cracking and deflection of the packaging unit 11.

This force-displacement plot can serve as an example only, and the actual measured character may also differ from this example within the known variation. However, the three main sections described 21, 23, 24 are retained.

Below is a table with measurement data, which, along with the data for the packaging units proposed by the utility model 11, also contains packaging unit data in accordance with the prior art.

room Compression Force (N) Compression Path (%) one 360 4.8 2 355 5.1 3 380 4.4 four 305 5.8 5 310 4.2 6 270 8.5 7 300 7.5 8 260 9,4 9 280 8.8 10 350 2.9

eleven 208 9.8 12 200 11.6 13 205 12.3

Dimensions 1–10 are various measured packaging units offered by the utility model 11.

For comparison, packaging units corresponding to the prior art, which are indicated by numbers 11-13, were measured in an identical manner.

In this case, the values of the compression force correspond to the force that is indicated in FIG. 6 as the maximum compression force 22. The compression path is equal to reducing the height of the packaging unit 11.

The packaging units 11 proposed by the utility model have, with a compressive force 19 acting in the direction of the middle longitudinal axis 2, ranging from 230 N to 400 N, the resulting compression path 20, which is not more than 10% of the height of the unloaded packaging unit 11. This is an advantage since how, after removal of the compression force 19 acting outside, elastic deformation removal occurs without damage due to the formation of cracks or concave regions.

But the compression force can also have values ranging from 80 N to 500 N, and lower values are due to the deformation of the thickened edge described above. Moreover, the measured compression path 20 is in the range from 0.4% to 1.5% of the total height of the packaging container 11 when viewed in the direction of the average longitudinal axis. In this case, the load transfer occurs from the sealing edge 7 directly to the upper edge facing the sealing edge of the outer part 10, then through this part with the passage through the deformed thickened edge 34 to the support surface of the packaging unit 11 not shown in detail.

In addition, it is preferable if the compression path 20 is not more than 8%, in particular not more than 6% of the height of the unloaded packaging unit 11, which, for example, even when using more fragile polymeric materials for the packaging container 1, such as, for example, polystyrene, allows elastic recovery to the original height of the packaging unit 11.

The relations between the compression force 19 and the compression path 20 are practically independent of the external geometry, respectively, of the absolute height and diameter of the packaging unit 11, however, it turns out that in the range of the height of the packaging unit from 3.5 cm to 15 cm, in particular, from 4 cm to 14 cm and in the range of diameters on average from 6 cm to 13 cm, preferably from 6.5 cm to 12.5 cm, these relations are valid only with small deviations, which are within the range, respectively, of the achievable measurement accuracy.

If there is an integral connection between the packaging container 1 and the shell-like outer part 10, the packaging unit may have a compression path of not more than 6%, in particular not more than 4%.

7 shows another packaging container 1 in axial section.

A cross section of the packaging container 1 along its middle longitudinal axis 2 is shown with a bottom 8 made in the first end region 4 and an opening 6 in the second end region 5, which is limited by the sealing edge 7.

According to the utility model, it is preferable if the average wall thickness 25 of the packaging container 1 in the bottom region 8 is not more than 80% of the thickness of the film used for thermoforming. Due to this, a sufficiently high stability of the packaging container 1, respectively, of the packaging unit 11 is achieved while optimally using the consumed amount of raw materials.

If the average wall thickness 25 of the packaging container 1 in the region of the bottom 8 is not more than 70%, in particular not more than 65% of the thickness of the film used for thermoforming, additional savings in raw material costs are possible, respectively, the wall thickness 25 in the region of the bottom 8 can be also changed in favor of a thicker average wall thickness 26 in the region of the side wall 3 and the resulting stability advantages of the packaging container 1.

Changing the wall thickness of the packaging container 1 affects the clamping forces and the general parameters of the hood.

Due to the fact that the average wall thickness 26 of the packaging container 1 in the region of the side wall 3 is from 5% to 70% of the thickness of the film used for thermoforming, on the one hand, high strength, respectively, stability of the packaging container is achieved, and in addition, high strength, for example, when filling the packaging container 1, in particular, during hot filling, which leads to the natural softening of the material.

If the average wall thickness 26 in the region of the side wall 3 of the packaging container 1 is from 15% to 40%, in particular from 20% to 35% of the thickness of the film used for thermoforming, a sufficiently high strength is achieved, for example, when stacking cups in several rows due to which a large stack height is obtained and the resistance to forces acting in the radial direction also increases.

The wall thickness 26 can be increased, in particular, in the second end region 5 in the transition to the sealing edge 7 and in the first end region 4 in the transition to the bottom 8, however, on average, these thicknesses 25, respectively, 26 walls are obtained .

Regardless of this, it is also possible that the wall thickness 26 of the packaging container 1 in the region of the side wall 3, starting from the sealing edge 7, decreases to the bottom 8. Thus, the thickness 26 of the side wall 3 near the sealing edge 7 can be in the range from 80% to 8% of the undeformed initial wall thickness 31. In the region of the bottom 8, respectively, if a step 33 is provided, in this region the wall thickness can be in the range from 30% to 5%.

On Fig shows another embodiment of the packaging unit 11, including the packaging container 1, and in the second end region 5 there is a section 9 of reinforcement larger in comparison with the side wall 3 of the diameter, and also in the first end region 4 there is a section 9 of reinforcement larger than with a diameter of the side wall of 3 diameters.

In the region of the side wall 3, the shell-shaped outer part 10 can abut against the packaging container 1, wherein the reinforcement sections 9 form fixing elements 15, 16 for fixing the shell-shaped outer part with a geometric closure.

The packaging container 1 shown in FIG. 8, respectively, the packaging unit 11, is only an example of many other forms, and should not be construed as limiting the scope of protection of the utility model. A specialist in this field, based on the idea of a utility model, will be able to produce packaging units 11 with different geometric shapes within the specified boundaries, and they are not excluded from the protection field.

The average thickness of the shell-shaped outer portion 10 may in a preferred embodiment of the utility model be from 0.22 mm to 0.4 mm, in particular from 0.26 mm to 0.34 mm. If the average thickness of the shell-like outer part 10 is from 0.34 mm to 0.4 mm, good thermal insulation is achieved, for example, of hot drinks. With an average thickness of the shell-like outer part 10 equal to 0.22 mm to 026 mm, the consumption of raw materials remains low and, despite this, an effect of enhancing the stiffness of the packaging unit 11 is achieved.

It is preferable if the ratio of uniformly acting on the sealing edge 7 of the packaging container 1 in the direction of the bottom 8 and the middle longitudinal axis 2 of the maximum compression force 19 and in the same way acting on the packaging container 11 of the maximum compression force 19 is from 1: 1.4 to 1: 3.5. In addition, the ratio of compression forces can be in the range from 1: 1.8 to 1: 3.5, in particular in the range from 1: 2 to 1: 2.5.

The table below shows the measured values of the force 19, respectively, 22 compression proposed by the utility model of packaging containers 1, similar to those shown in Fig.6 packaging units 11. Moreover, this ratio corresponds to the ratio of the maximum compression force 19 of the packaging container 1 to the maximum compression force 19 of the corresponding packing unit 11.

room Compression Force (N) Attitude one 112 1: 3.21 2 150 1: 2.36 3 180 1: 2.1 four 134 1: 2.27 5 217 1: 1.43 6 133 1: 2.03 7 185 1: 1.62 8 149 1: 1.74 9 130 1: 2.15 10 242 1: 1.45

The material for the manufacture of the packaging container 1 may be selected from the group of polypropylene or polystyrene. Both transparent and colored material can be used. The benefits of polystyrene are economical processing and good molding ability. Both homopolymerizates of monostyrene and copolymers or blends can be used. The indicated values, respectively, of strength are achieved using traditional polystyrenes with an elastic modulus according to EN ISO 527 in the range from 1 × 103 to 5 × 103 N / mm ² .

Propylene is used in the form of homo- and copolymers. It is also possible to use metallocene catalysts. Polypropylene films with a modulus of elasticity in the range from 4 × 102 to 3 × 103 N / mm ² are known in the art.

In one embodiment, the packaging container 1 may have reinforcement sections 9 in the first end region 4, respectively, in the second end region 5, the wall thickness being from 15% to 55%, in particular from 25% to 40% of the thickness of the used for thermoforming a film.

The reinforcement sections 9 can serve as locking elements 15, 16 for fixing the shell-shaped outer part 10 with a geometric closure. Due to this, slipping of the shell-like outer part 10 along the packaging container 1 in the direction of the middle longitudinal axis 2 is additionally hindered.

Shell-shaped outer part 10 in one of the preferred forms of implementation may be made of non-woven material. Due to the large number of fibers, the nonwoven material has a significantly larger overall outer surface per unit volume and can hold more insulating air. Thanks to this, high cold and heat protection is achieved even with a small thickness of the material. The use of microfibre non-woven materials will further enhance this effect. To achieve strength values in accordance with the utility model, due to the fibrous structure of the nonwoven material, only a small amount of material is required, respectively, a smaller thickness of the nonwoven material compared to cardboard materials.

Figure 9 shows another form of implementation of the packaging unit 11.

In this embodiment of the utility model, the packaging unit 11 in the region of the side wall 3 has a shell-shaped outer part 10 that extends from the second end region 5 to at least parts of the first end region 4, in particular the bottom 8.

The shell-shaped outer part 10 can, as shown in Fig. 9, be only in the transition region from the first end region 4 to the bottom 8, however, in a preferred manner, it is also possible that the shell-shaped outer part 10 extends all over the bottom 8.

Due to this, it is precisely in the highly loaded first end region 4 that an additional reinforcing effect is achieved, which ensures higher stability, respectively, the height of the stack.

The shell-shaped outer part 10 can, in order to avoid creasing, or warping in the bottom region 8, be folded, cut, respectively, and also glued to the packaging unit 1 in these areas.

In addition, it is also possible that at least a partial permanent connection of the shell-like outer part 10, in particular, an adhesive connection. This adhesive joint can, for example, be made in a direction parallel to the middle longitudinal axis 2, thereby providing additional reinforcement.

For example, the proportion of the bonding area on the surface of the shell-like outer part 10 can be up to 20%, in particular up to 10%. For less loaded packaging units 11, the proportion of the bonding area on the surface of the shell-like outer part 10 can be up to 10%, in particular up to 5%, so that the compression path 20 will be no more than 6%, in particular no more than 4%.

Figure 10 shows another embodiment of the packaging unit 11, with a shoulder 27 formed at the bottom.

In this embodiment, the shell-shaped outer portion 10 forms a bottom flange 27 in the first end region 4 of the packaging container 1, which is spaced apart in the direction of the middle longitudinal axis 2.

The bottom 8 of the packaging container 1 is covered with another bottom 28, the edge areas of which are fixed in the flange 27 of the bottom of the shell-like outer part 10.

The additional bottom 28 may be appropriately folded and laid in part of the side wall 12 or in the flange 27 of the bottom.

It is also possible glue connection of the additional bottom 28 and the side wall 12 or the flange 27 of the bottom.

Thanks to this embodiment, additional stability is achieved, in particular in the first end region 4.

11 shows an embodiment of a shell-like outer portion 10 that is located on a packaging container 1.

Thus, it is possible that the shell-like outer portion 10 forms an overlap portion 13.

From the first end region 4 in the direction of the second end region 5 of the packaging container 1, a predetermined separation strip 29 can also be at least partially located. It is also possible to perform a tongue 30 to separate the strip 29 of a given separation.

Due to this, even with high locking forces between the packaging container 1 and the shell-like outer part 10, they are easily disconnected, for example, for a clean separation of materials.

Due to this, it is also possible (not shown in FIG. 11) that the strip 29 of a predetermined separation is at least partially made in the circumferential direction of the shell-shaped outer part 10, thereby also facilitating its separation.

It is also possible, in particular, to provide a double-sided coating or printing on the shell-shaped outer part 10. To improve the resistance to moisture, the shell-shaped outer part can be coated with paraffin. To improve the resistance to ultraviolet radiation or acid resistance, it is possible to paint or coat an aluminum layer on the inside of the shell-like outer part 10. For better moisture resistance, both ends of the shell-like outer part 10 can be protected by a suitable coating.

In the given embodiments, possible embodiments of the packaging container 1, respectively, of the packaging unit 11 are shown, and it should be noted here that the utility model is not limited to the particular presented variants of its implementation, but, on the contrary, various combinations of individual embodiments with each other are also possible, and this the possibility of variation, based on the ideas of the technical approach according to this utility model, is within the capabilities of a specialist working in this technical th field. Thus, the scope of protection also includes all possible embodiments that can be accomplished by combining the individual details of the presented and described embodiments.

For the sake of order, in conclusion, it should be pointed out that for a better understanding of the design of the packaging container 1, respectively, of the packaging unit 11, they, respectively, their components are partially presented without observing the scale and / or in a greatly enlarged and / or reduced image.

The task underlying the independent solutions of the utility model is formulated in the description.

First of all, the subject of independent decisions of a utility model may be individual ones shown in FIG. 1; 2; 3; four; 5; 6; 7; 8; 9; 10; eleven; 12 embodiments. The corresponding tasks and solutions of the utility model are described in detailed descriptions of these figures.

Reference List

1 packing capacity

2 Middle longitudinal axis

3 side wall

4 End area

5 End area

6 hole

7 sealing edge

8 bottom

9 gain section

10 Outside

11 Packing unit

12 side wall

13 overlap

14 wall section

15 locking element

16 locking element

17 Adjacent element

18 Adjacent element

19 Compression Strength

20 compression path

21 Plot

22 Maximum compression force

23 Plot

24 Plot

25 wall thickness

26 wall thickness

27 flange bottom

28 bottom

29 Band of a given separation

30 tongue

31 Initial thickness

32 wall thickness

33 ledge

34 Thickened hem

Claims (34)

1. A packaging container (11) for food products, including a packaging container (1) in the form of a cup, made by thermoforming from a film with an initial thickness (31) of an undeformed film, the packaging container (1) along its middle longitudinal axis (2) has a thin-walled, essentially conical side wall (3), which in the first end region (4) is closed by the bottom (8), and on the opposite second end region (5) has an opening (6) with a circumferential sealing edge (7), as well as shell-shaped bunks the bottom part (10), covering the packaging container (1), at least 70% of its height, characterized in that the sealing edge (7) has a wall thickness (32), which compared to the original thickness (31) undeformed film is reduced by a value in the range from 2 to 25%, in particular from 6 to 20%, moreover, in a plane located perpendicular to the middle longitudinal axis (2), as well as in an unloaded and ready to use condition of the packaging container (11) inner diameter of shell-like outer part (10) poppy the maximum is 1.5% smaller and the maximum 2.5% larger than the outer diameter of the packaging container (1) in the same plane. 2. A packaging container (11) according to claim 1, characterized in that the edge (7) intended for sealing has a wall thickness (32), which, compared to the original thickness (31) of the undeformed film, is reduced by a value in the range of 8 up to 17%, in particular from 10 to 14%. 3. A packaging container (11) according to claim 1 or 2, characterized in that the packaging container (11) when loaded uniformly acting on the edge intended for sealing (7) in the direction of the bottom (8) and the middle longitudinal axis (2) by force ( 19) compression in the range from 80 to 500 N, preferably from 280 to 350 N, has a compression path (20) equal to not more than 10% of the height of the unloaded packaging container (11). 4. A packaging container (11) according to claim 3, characterized in that the compression path (20) is in the range from 0.4 to 8%, in particular from 1.5 to 5%. 5. A packaging container (11) according to claim 1, characterized in that the inner diameter of the shell-shaped outer part (10) is on average 1.2% maximum, in particular 0.8% maximum, less than the outer diameter of the packaging container (1) ) 6. A packaging container (11) according to claim 1, characterized in that the inner diameter of the shell-shaped outer part (10) is greater than the outer diameter of the packaging container (1) by a maximum of 2.2%, in particular a maximum of 1.8%. 7. A packaging container (11) according to claim 1, characterized in that at least partially the shell-shaped outer part (10) is inseparably connected to the packaging container (1), in particular, an adhesive joint. 8. A packaging container (11) according to claim 7, characterized in that the proportion of the bonding area on the surface of the shell-shaped outer part (10) is selected so that the packaging container has a compression path (20) of not more than 6%, in particular not more than 0, 5%. 9. A packaging container (11) according to claim 1, characterized in that the packaging container (1) in a portion of its side wall (3) located near the bottom (8) has a section (14) offset in the direction of the middle longitudinal axis (2) wall, which with the formation of a step (33) passes into the side wall (3) in the region spaced from the bottom (8) in the direction of the open end region (5). 10. A packaging container (11) according to claim 9, characterized in that the wall section (14) has, starting from the step (33) in the direction of the bottom (8), a different, in particular decreasing, wall thickness. 11. A packaging container (11) according to claim 9 or 10, characterized in that the wall thickness of the section (14) is reduced by an amount in the range from 75 to 45%, in particular from 70 to 55%. 12. A packaging container (11) according to claim 1, characterized in that the outer diameter of the side wall (3) of the packaging container (1) with the interior filled with food products and about halfway between the bottom (8) and the edge intended for sealing ( 7) increased by a value from 0.01 to 1.5% with respect to the undeformed side wall (3). 13. A packaging container (11) according to claim 1, characterized in that the packaging container (1) in the transition region between the bottom (8) and the side wall (3) has a thickened edge (34) protruding radially from the side wall (3) ) 14. A packaging container (11) according to claim 13, characterized in that the thickened edge (34) has a wall thickness which, in comparison with the initial thickness (31) of the undeformed film, is in the range from 3 to 25%, in particular from 7 to fifteen%. 15. A packaging container (11) according to claim 13 or 14, characterized in that the thickened edge (34) has a larger outer diameter than the inner diameter of the region of the shell-like outer part (10) adjacent to it and is a fixing element (15) for fixing the shell-like outer part (10) with a geometric closure. 16. A packaging container (11) according to claim 1, characterized in that the edge (7) intended for sealing forms a locking element (16) for fixing the shell-shaped outer part (10) with a geometric closure. 17. A packaging container (11) according to claim 1, characterized in that the shell-shaped outer part (10) passes through at least parts of the first end region (4), in particular the bottom (8). 18. A packaging container (11) according to claim 1, characterized in that the average wall thickness (25) of the packaging container (1) in the bottom region (8) is not more than 80% of the initial thickness (31) used for thermoforming the film. 19. A packaging container (11) according to claim 18, characterized in that the average wall thickness (25) of the packaging container (1) in the bottom region (8) is not more than 70%, in particular not more than 65% of the original thickness (31) used for thermoforming a film. 20. A packaging container (11) according to claim 1, characterized in that the average thickness (26) of the wall of the packaging container (1) in the region of the side wall (3) is from 5 to 70% of the initial thickness (31) used for thermoforming the film . 21. The packaging container (11) according to claim 20, characterized in that the average thickness (26) of the wall of the packaging container (1) in the region of the side wall (3) is from 15 to 40%, in particular from 20 to 35% of the original thickness (31) used for thermoforming a film. 22. A packaging container (11) according to claim 1, characterized in that the thickness (26) of the wall of the packaging container (1) in the region of the side wall (3) decreases, starting from the edge (7) intended for sealing to the bottom (8). 23. A packaging container (11) according to claim 1, characterized in that the average thickness of the shell-like outer part (10) is from 0.22 to 0.40 mm, in particular from 0.26 to 0.34 mm. 24. A packaging container (11) according to claim 1, characterized in that the shell-shaped outer part (10) forms an overlap portion (13) with at least partially from the first end region (4) in the direction of the second end region (5) ) packaging capacity (1) strip (29) of a given separation. 25. A packaging container (11) according to claim 1, characterized in that the shell-shaped outer part (10) has a strip (29) of a predetermined separation, made at least partially in the circumferential direction. 26. A packaging container (11) according to claim 1, characterized in that the ratio of the packaging container (1) evenly acting on the edge (7) intended for sealing in the direction of the bottom (8) and the average longitudinal axis (2) of the maximum force (19) compression to the maximum compression force (19) acting in the same way on the packaging container (11) is from 1: 1.4 to 1: 3.5. 27. A packaging container (11) according to claim 26, characterized in that the ratio of the packaging container (1) evenly acting on the edge (7) intended for sealing in the direction of the bottom (8) and the average longitudinal axis (2) of maximum force (19) compression to the maximum compression force (19) acting in the same way on the packaging container (11) is in the range from 1: 1.6 to 1: 3.2, in particular in the range from 1: 1.8 to 1: 2.8 . 28. A packaging container (11) according to claim 1, characterized in that the material for the manufacture of the packaging container (1) is selected from the group of polypropylene (PP) or polystyrene (PS). 29. A packaging container (11) according to claim 28, characterized in that the film used for thermoforming has an initial thickness in the range of 0.7 to 2.0 mm, preferably in the range of 0.9 to 1.7 mm. 30. A packaging container (11) according to claim 1, characterized in that the shell-shaped outer part (10) is made of cardboard material. 31. A packaging container (11) according to claim 30, characterized in that in the ready-to-use state of the packaging container (11), the cardboard material of the shell-shaped outer part (10) has cellulose fibers oriented essentially in the plane and circumferential direction of the shell-shaped outer part ( 10). 32. A packaging container (11) according to claim 30 or 31, characterized in that the cardboard material of the shell-shaped outer part (10) has a weight per unit area in the range from 180 to 290 g / m ² , preferably in the range from 220 to 260 g / m ² . 33. A packaging container (11) according to claim 1, characterized in that the shell-shaped outer part (10) is made of a polymer material. 34. A packaging container (11) according to claim 1, characterized in that the shell-shaped outer part (10) is made of non-woven material.