EP2647586A1 - Packaging container - Google Patents

Abstract

The packaging container (1) has an interior portion (2) and an outer portion (3). The interior portion is formed in flat or cup shape, and enclosed by the outer portion. The interior portion is made of moldable and thermoformable material. Constructional reinforcing structures are provided in side wall portions (5) of the interior portion and the outer portion respectively.

Description

The invention relates to a packaging container having an inner part and an outer part, wherein the inner part forms a cup-shaped or cup-shaped container and the outer part surrounds the inner part at least partially, wherein the inner part of a moldable, in particular thermoformable and / or thermoformable material on or is made in several pieces.

There are various types of packaging of this type are known, but all have the disadvantage of requiring a relatively high cost of materials. The wall thickness of the inner part and outer part must be relatively thick, at least in total, in order to achieve the necessary stability.

In addition, these packaging containers are only conditionally usable for cold or hot products.

The invention has for its object to ensure a high stability of the packaging container and reduce the use of materials again. This object is achieved in that the inner part and / or the outer part, at least in the region of the side wall portions having a structurally reinforcing structure.

By this structurally reinforcing structure, a higher strength of the individual parts and especially the composite packaging container is created.

It has proven to be very advantageous if the structure is designed as a longitudinal and / or transverse ribs, as a honeycomb structure, as a nub structure, as a regular and / or irregular structure.

Through these various structures, the stability in the desired direction for the inner part, the outer part or both parts can be optimized and improved.

Another very advantageous embodiment of the invention is also present when spacers are provided between the inner part and the outer part, wherein the structure may be formed as a spacer.

Hereby, an air layer between the inner part and the outer part is created, which acts as an insulating layer. By appropriate design of the structure convection between the inner part and outer part can be effectively prevented.

According to a development of the invention, it is also extremely advantageous if a clamping device, in particular a clamping groove or another Klemmmöglichkeit, or a locking device for connecting the inner part and outer part is provided, wherein the clamping or locking device may preferably be provided at the upper end of the container ,

By this type of attachment inner part and outer part can be assembled easily, yet durable. A separability is also given.

Another very advantageous embodiment of the invention is also to be seen in the fact that a functional coating, in particular a functional inking is provided.

By such a coating, various parameters can be determined. It is conceivable, for example, for a coating to produce a color change if the cold chain is not observed, or else for a specific outside or inside temperature of the packaging container to be displayed via a color change. Thus, it can be determined whether the container is safely graspable and / or if the content has the desired temperature.

According to the invention it has also proved to be very advantageous if at least partially made of renewable, biodegradable and / or recycled raw materials material can be provided as material in addition to conventional plastics and that the outer part at least partially surrounds the circumference of the inner part and in addition to conventional Materials preferably made of a renewable, biodegradable and / or recycled raw material, preferably fibrous materials are provided.

With these materials, the packaging can be produced optimized from an ecological point of view.

An extremely advantageous development of the invention is also present when the outer part surrounds the inner part at least in the region of its side walls, wherein an additional floor may be provided in the outer part.

This protects and stabilizes the inner part. It is also conceivable that between the inner part and outer part cavities are created, can be embedded in the grave goods.

Another very advantageous embodiment of the invention is also present if in the outer part of an opening or an openable area is provided, which can also be designed separable.

In this way, a window, a coupon or an opening option for behind arranged grave goods can be created.

It is also very advantageous according to a further embodiment of the invention, if between the inner part and outer part of a functional layer, in particular an insulating layer is provided.

A functional layer can fulfill a variety of tasks. One of the most important tasks is to avoid or at least reduce the insulation between the inner part and outer part in order to prevent heat transfer. The simplest formation of the functional layer is an air layer.

It is also very advantageous according to the invention if the edge is flat, round or contoured.

This can be used to equip the container for a wide variety of uses.

Another very advantageous embodiment of the invention is the fact that a lid or a lid sheet is sealed and / or placed or snapped on the edge.

Thus, the packaging container can be easily and effectively closed.

It is also very advantageous according to the invention if a stacking aid, in particular a stacking shoulder, is provided.

As a result, especially the unstacking, especially the machine unstacking is facilitated because a adhering successive container is prevented. The stacking shoulder prevents too deep sinking into the next container. It can penetrate air between the containers when destacking. The formation of negative pressure is prevented.

According to the invention, it has also proven to be very advantageous if the lower edge of the outer part is folded over or rolled up.

This stabilizes the edge and protects it from the ingress of moisture.

It is also extremely advantageous according to the invention if the structure is embossed.

As a result, the desired structure can be generated in a simple manner.

A very advantageous development of the invention is also present when the inner and / or outer part of a thermoformable and / or thermoformable material is made in one or more pieces.

Thus, the packaging container can be made of a variety of materials.

In the following the invention will be illustrated with reference to several embodiments.

Fig. 1

ein Schaubild eines erfindungsgemäßen Bechers mit einem Innenteil und einem Außenteil, wobei am oberen Ende des Bechers eine Mundrolle als Rand vorgesehen ist,

Fig. 2

einen Schnitt durch den Becher,

Fig. 3

eine Ansicht eines Abschnitts des Außenteils mit einer linienförmigen Struktur,

Fig. 4

eine Ansicht eines Abschnitts des Außenteils mit einer noppenförmigen Struktur, und

Fig. 5

eine Ansicht eines Abschnitts des Außenteils mit einer rechteckigen Struktur.

Showing:

Fig. 1

a diagram of a cup according to the invention with an inner part and an outer part, wherein at the upper end of the cup a mouth roll is provided as an edge,

Fig. 2

a section through the cup,

Fig. 3

a view of a portion of the outer part with a linear structure,

Fig. 4

a view of a portion of the outer part with a knob-shaped structure, and

Fig. 5

a view of a portion of the outer part with a rectangular structure.

With 1 is in Fig. 1 a packaging container designed as a cup, which is essentially formed from a cup-shaped inner part 2 and a jacket-shaped outer part 3.

The inner part 2 has in this embodiment, a substantially round bottom 4 with an adjoining, circumferential wall 5, wherein the wall 5 slightly conically widens from the bottom 4 ago.

At the end facing away from the bottom 4 of the wall 5, an edge 6 is provided. This edge 6 can be rolled outwards and form a mouth roll. But it is also conceivable that the edge 6 is formed flat or contoured.

On this edge 6, a lid 8 may be placed, wherein the lid may be attached to the edge 6 by means of a sealed seam 7. A snap lid is also conceivable, with a combination of sealing seam 7 and snap mechanism provided can be. It is also conceivable that the lid 8 is designed as a lid foil. A combination of lid foil and snapped lid is conceivable.

If the cover 8 is sealed onto a rolled-over edge 6, the sealing seam 7 can simply be provided peripherally on the edge. The lid can be adapted to the contour of the edge 6 in the region of the sealing seam 7. It is also conceivable that the edge, in the case of a rolled or contoured edge 6 in the region of the sealing seam 7 is flattened.

In addition, it is conceivable that a lid 8 which is snapped onto the edge 6 has a downwardly inclined edge 81 which is able to bear against the underside of the edge 6. For this purpose, projections 82 are provided which project inwardly from the edge of the lid and engage under the edge 6 of the cup 1. The edge 81 of the lid lies fully on the outer periphery of the edge 6. Sufficient pressure is ensured. Due to the rolled, flat or contoured shape of the edge 6 is also so stable that the pressure to the lid edge 81 can be maintained even for a long time without the edge 6 is deformed by the contact forces.

The covers used in this context may consist of deep-drawn, injection-molded or otherwise shaped plastic material. Also conceivable is the use of paper, cardboard or cardboard lids, which are deep-pressed, or otherwise shaped. Lids made of molded fiber are also conceivable. However, such covers should have a layer of resistance to the contents on their inner side.

The outer part 3 is shaped according to the shape of the inner part 2 and has, as in Fig. 1 exclusively shows a jacket which lies around the side wall 5 of the inner part 2. In this case, the outer part 3 ends directly under the edge 6 and in the region of the bottom. 4

But it is also conceivable that the outer part 3 extends only over part of the height of the side wall 5. It is also conceivable that the outer part 3 extends at least as far down as the inner part 2. In this context, the outer part 3 may extend beyond the inner part 2. Under certain circumstances, a belonging to the outer part 3 bottom 9 may be provided which is connected to the wall of the outer part 3.

Due to the two-part design of the packaging container 1, the material thickness of the inner part 2 can already be reduced. Any disadvantages in the mechanical stability are compensated by the outer part 3. The outer part 3 stabilizes the packaging container 1.

By reducing the material thickness of the inner part 2 expensive raw materials, as they must be used for direct contact with food, can be saved. The outer part 3, however, can be made of cheaper raw materials, especially from recycled raw materials.

In order to achieve a further reduction of the material requirement, structural features for further stabilization of the packaging container are provided according to the present invention.

These structural features are that in the side wall 5 of the inner part 2, a structure 10 is provided. The structure 10 may be formed, for example, as longitudinal and / or transverse ribs, as a honeycomb structure, as a nub structure or any other regular and / or irregular structure.

Due to the structure 10, the inner part 2 is significantly stiffened, so that the material thickness can be reduced again in the rule.

But it is also conceivable that instead of a structure 10 in the inner part 2, the structure 11 is arranged in the outer part 3.

This also a significant gain of the packaging container 1 is achieved.

In this context, it is also conceivable that both a structure 10 in the inner part 2 and a structure 11 in the outer part 3 is provided. However, it is expedient that the structures 10 and 11 are designed differently. For example, the structures may be at an angle to each other, or be negative to each other, so that not coincidentally, the one structure engages the other structure.

The structures 10 and 11 may be provided not only in the walls but also in the floor area.

By the structures 10 and 11, a distance between the inner part 2 and the outer part 3 is created in addition to the structural reinforcement of the walls. This distance acts as an insulation layer. The heat transfer between the environment and the contents of the packaging container is reduced.

In particular, the temperature difference on the outside of the packaging container 1 with respect to the environment is smaller.

Thus, the packaging container 1 can also be easily gripped when the contents are hot or cold. The outside is pleasantly tempered.

In order to prevent an accidental combustion on the outside, especially with very hot contents of the packaging container 1, a functional layer can also be provided at least partially on the outside of the outer part 3. In this case, the functional layer can be a temperature-sensitive imprint, which indicates whether a certain temperature is undershot, exceeded or maintained.

In this context, it is also conceivable that such a functional layer is mounted on the inner part 2 and corresponding to a viewing window or an at least openable or removable part is provided in the outer part 3, which makes it possible to view the functional layer on the inner part 2.

Another functional layer may also be, for example, an insulating layer or the like. A self-heating or self-cooling layer after activation is also conceivable here.

Between inner part 2 and outer part 3 may also be provided a cavity for receiving objects. Access to this cavity may, for example, be via an openable section or detachable coupon 16.

Another conceivable variant is also that the outer part 3, which is usually equipped with a print or the like, has a viewing window or the like, thus allowing a view of the contents of the packaging container. For this purpose, the inner part 2 must be transparent or at least transparent in the region of the viewing window. The viewing window can be designed as a recess or detachable area.

In the inner part 2, a stacking shoulder 12 may be provided, which when stacking a plurality of packaging containers 1 one above the other ensures that the containers are not inserted too deeply into one another and thus the unstacking is made difficult by adhesion forces and vacuum.

When the moist production and storage conditions occurring there, it is often useful if the outer part 3, which is often made of paper or cardboard, is equipped with a printing ink or impregnation or coating, for example based on waxes to this insensitive to moisture close.

Cut edges of the outer part 3 may be folded or rolled so that they are not exposed. In particular, the lower edge of the outer part 3 can be rolled, whereby not only the material of the outer part 3 is protected, but also the stability is improved.

If a rolled or contoured edge 6 is provided, the upper end of the outer part 3 can be covered by the edge 6, so that here, too, the cut edge is not exposed. In addition, the outer part 3 can be held by the edge 6. By rolling or contouring creates a channel 13, which serves as a clamping channel. By clamping in this channel 13, the outer part 3 is attached to the inner part 2. It can be waived in whole or in part on further attachments between the inner part 2 and outer part 3.

It is conceivable that the Umrollung or contouring is generated only when inner part 2 and outer part 3 are joined together.

Other fasteners can be created for example by gluing and / or notches.

It is also conceivable in this context that the upper end of the outer part 3 is rolled out or contoured together with the inner part to the outside, whereby even better coverage and attachment of the upper end of the outer part 3 is ensured.

Depending on the application, the rewinding can also take place completely or partially. In the illustrated embodiment, the rewinding is about 270 °. But it is also conceivable that the rewinding smaller or larger fails. Thus, the edge 6 can also be simply bent outward, resulting in a substantially flat, outwardly projecting flange.

The merging of inner part 2 and outer part 3 can either be done so that the two parts are made separately and then plugged into each other. But it is also possible that the outer part 3 is wrapped around the inner part 2 and glued thereto or otherwise attached to this. In addition, the inner part 2 can be deep-drawn into the outer part 3 into.

For the preparation of the Umrollung of the edge 6 also different methods are conceivable. According to a preferred embodiment of the method according to the invention, however, first the inner part 2 is to be merged with the outer part 3. Subsequently, the roll is formed by expansion and subsequent beading of the end remote from the bottom 4 of the side wall 5 of the inner part 2. In this case, the outer part 3 can be at least partially rolled over. But it is also conceivable that the Umrollung is placed so that it is located just above the end of the outer part 3.

If, first, the rollover of the inner part 2 is formed, the outer part 3 can also be pushed over the inner part and inserted into a groove or channel 13 formed by the rollover. In this clamping groove, the outer part 3 is held.

The packaging container 1 can not be designed only as a cup. There are also shell-like container conceivable. In addition, the invention is not limited to round packaging containers. There are also other forms conceivable. For example, a rectangular shape with rounded corners is also conceivable, as is often the case for ready-made snacks. Especially with ready-made snacks they can be heated, for example in the microwave, but are still very easy to handle.

After use of the packaging container 1, this can be easily separated again into the inner part 2 and the outer part 3.

The inner part 2 is often made of materials such as PS, PE, PP, PET, PVC, but also starch polymers, polylactic acid (PLA) or other materials. However, depending on the contents, fiber-containing materials such as paper, cardboard, fine cardboard or the like are also conceivable, which should then be equipped with a resistance layer to the contents in order to prevent softening of the inner part 2 and thus migration of ingredients of the inner part 2 in the To prevent contents from entering.

Such a resistance layer may be formed, for example, as a barrier layer. However, resistance layers are also conceivable which have resistance properties to the filling material at least for a defined period of time. For example, a coated or impregnated paper can be used.

As a coating, plastic coatings are also conceivable, such as treated or untreated paper layers, for example parchment, glassine, parchment replacement and / or glassine substitute or other papers having the desired properties. Molded fiber is particularly conceivable when the surface is smooth.

Impregnations, for example, based on fat are also conceivable.

In this context, also multi-layered internal parts can be used. These can on the one hand have one or more barrier or resistance layers, but also one or more base layers.

As barrier layers, for example, EVOH, PA or other common materials with barrier properties are conceivable. These can then also be provided in extremely thin layers in the material of the inner part 2.

Often, as already described above, the internal parts 2 are produced by deep drawing. But it is also conceivable that these are wound or otherwise composed of several pieces. It is in this context also conceivable that instead of a cup 1 in the classical sense with a round bottom 4 and a square container is created. Just then, the packaging container 1 can also be designed in several parts.

Overall, the inner part 2 according to the invention is soft or less stiff. On the one hand, this can be a consequence of the choice of material and, on the other hand, it can be a consequence of a very small wall thickness of the inner part 2.

The aim of the invention is to use as little as possible or poorly biodegradable and / or non-renewable raw materials, but nevertheless to produce the known comfort and the desired stability of the container. In addition, a better handling should be created as additional benefits.

For this reason, the wall thicknesses of the inner part 2 are reduced and additionally at least largely produced from renewable and / or biodegradable raw materials. Nevertheless, a very high strength of the packaging container 1 is ensured due to the structural design. Thus, this can be difficult to squeeze when handling and is therefore suitable as a drinking vessel or the like.

However, such renewable and / or biodegradable raw materials are very expensive, since these must have special properties, especially with regard to food compatibility and / or barrier properties. Especially in applications that require an elevated temperature of the content, the selection of suitable raw materials is very thin and the prices for these are high. This is another reason to use these materials as sparingly as possible.

A structural increase in the stability of the inner part 2 by reinforcing ribs or, for example, by an outwardly projecting bead arranged in the bottom region are conceivable. Such a bead can then also serve as a locking edge for the outer part 3 and also as a stacking or Entstapelungshilfe.

The outer part 3 stabilizes and strengthens the side wall 5 of the inner part 2.

The outer part 3 is generally made of paper, cardboard, cardboard or other materials and may also consist of recycled materials. In this case, the outer part 3 may also be formed in multiple layers. The outer part 3 is relatively uncritical in terms of food suitability, since the contents do not come into contact with the outer part. It is also conceivable that the outer part 3 is made of plastics or the like, which often offers the use of recycled plastics here.

On the outside of the outer part 3, a printed image 15 can be provided. In order to obtain a high quality print 15, the outside can be coated with a particularly smooth and easy to print material. Fine papers are also conceivable here, as well as suitably equipped plastics. In this context, it is also conceivable that a base coat is provided under the actual printed image.

In order to avoid abrasion of the printing inks and / or damage to the printed image, an overcoat or a protective coating may also be provided.

The outer part 3 can also be made of corrugated materials such as corrugated cardboard or the like, which can then serve for a very good insulation of the packaging container 1 or at least have particularly pleasant tactile properties.

Insulation may also be provided, for example, by a foamed coating, for example based on starch polymers. This isolation can, as already indicated above, also be arranged between inner part 2 and outer part 3.

Insulated cups 1 are particularly suitable for cold or hot products.

The outer part 3 may be at least partially equipped with a protective coating that can make these insensitive to moisture, liquid but also fats.

Especially at the lower and upper edges of the outer part 3 there is a risk that moisture, liquid or fats can penetrate there, since there are usually open cut edges.

Especially in these areas, the protective coating can be provided. But it is also conceivable that the edges of the outer part 3 are folded inwards and so the cut edges are protected and so the penetration of moisture, liquid or the like is avoided.

In this context, it is also conceivable that the outer part 3 by means of appropriate equipment at least for a defined period of time resistance properties to these substances. This can be ensured, for example, by an impregnation or an appropriate material selection.

The outer part 3 may have a predetermined breaking point 14, at which the outer part 3 can be opened and separated from the inner part 2.

Inner part 2 and outer part 3 can then be disposed of separately from one another for disposal, although this is actually no longer necessary in a selection of substances as described above.

The structures 10 and 11 may also be designed to be closed on their inner or outer side, so that the outer part 3 is at least approximately smooth outside and the inner part 2 is at least approximately smooth inside. It is in this context also conceivable that an additional covering layer is provided, which ensures the smoothness.

Claims (15)

Packaging container (1) with an inner part (2) and an outer part (3), wherein the inner part (2) forms a cup-shaped or cup-shaped container and the outer part (3) at least partially surrounds the inner part (2), wherein the inner part (2 ) is made of a moldable, in particular thermoformable and / or thermoformable material or one or more pieces, characterized in that the inner part (2) and / or the outer part (3) at least in the region of the side wall portions a structurally reinforcing structure (10, 11) exhibit. Packaging container according to claim 1, characterized in that the structure (10, 11) as longitudinal and / or transverse ribs, as a honeycomb structure, as nub structure, as a regular and / or irregular structure is formed. Packaging container according to claim 1 or 2, characterized in that spacers between inner part (2) and outer part (3) are provided, wherein the structure (10, 11) may be formed as a spacer. Packaging container according to claim 1, 2 or 3, characterized in that a clamping device, in particular a clamping groove (13) or another Clamping possibility, or a locking device for connecting the inner part (2) and outer part (3) is provided, wherein the clamping or locking device may preferably be provided at the upper end of the container (1). Packaging container according to one of the preceding claims, characterized in that a functional coating, in particular a functional inking is provided. Packaging container according to one of the preceding claims, characterized in that the material in addition to conventional plastics and at least partially made of renewable, biodegradable and / or recycled materials produced material can be provided and that the outer part at least partially surrounds the circumference of the inner part and conventional Materials preferably made of a renewable, biodegradable and / or recycled raw material, preferably fibrous materials are provided. Packaging container according to one of the preceding claims, characterized in that the outer part (3) surrounds the inner part (2) at least in the region of its side walls (5), whereby an additional base (9) can also be provided in the outer part (3). Packaging container according to one of the preceding claims, characterized in that in the outer part (3) an opening or an openable region (16) is provided, which can also be designed separable. Packaging container according to one of the preceding claims, characterized in that a functional layer, in particular an insulating layer, is provided between inner part (2) and outer part (3). Packaging container according to one of the preceding claims, characterized in that the edge (6) is flat, round or contoured. Packaging container according to one of the preceding claims, characterized in that a lid (8) or a cover film is sealed and / or placed or snapped onto the edge (6). Packaging container according to one of the preceding claims, characterized in that a stacking aid, in particular a stacking shoulder (12) is provided. Packaging container according to one of the preceding claims, characterized in that the lower edge of the outer part (3) is folded or rolled up. Packaging container according to one of the preceding claims, characterized in that the structure (10, 11) is embossed. Packaging container according to one of the preceding claims, characterized in that the inner (2) and / or outer part (3) is made of a thermoformable and / or thermoformable material in one or more pieces.

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