EP3999434A1

EP3999434A1 - Dishware unit and method for sealing partially prepared meals

Info

Publication number: EP3999434A1
Application number: EP20754168.1A
Authority: EP
Inventors: Eilerts MARTIN
Original assignee: MChef GmbH and Co KG
Current assignee: MChef GmbH and Co KG
Priority date: 2019-07-18
Filing date: 2020-06-30
Publication date: 2022-05-25
Anticipated expiration: 2040-06-30
Also published as: DE102019004989A1; ES2955808T3; DE102019004989B4; WO2021008718A1; EP3999434B1

Abstract

Dishware unit (1) such as a plate, for the packaging, transport and/or consumption of meals (30), having a body (2) covered by a film (15), wherein an adhesive (21) is present in an adhesive-bonding region (8) between the film (15) and the body (2) in order to seal the dishware unit (1), characterized in that the film (15) comprises at least one sealing layer (15a) based on polyethylene, and in that the dishware unit (1) consists at least partially of a ceramic material, and in that the adhesive (21) comprises at least one pressure-sensitive hot-melt adhesive and consists at least partially of thermoplastic rubber, and the sealing layer (15a) sticks the film (15) to the ceramic material of the dishware unit (1).

Description

description

"Dishcleanliness and procedure for sealing partially prepared dishes"

The present invention relates to a crockery unit and in particular a plate for the packaging, transport and / or consumption of food and a method for

Sealing a dish unit with a foil. The crockery unit has a body which is or is covered with a film. Between the film and the body is in one

Adhesive area an adhesive is available to seal the dish unit with the foil.

In the prior art, there are dishes and also methods for sealing

Tableware units with dishes arranged thereon become known. The unpublished DE 10 2018 000 407.5 of the applicant discloses a tableware unit with a body covered with a film, in which an adhesive for sealing the tableware unit is present in an adhesive area between the body and the film. The film and the crockery unit have such a surface tension that the adhesive at least predominantly adheres to the film when the film is removed. The crockery unit described in this publication functions satisfactorily. Most of the adhesive adheres to the film. But it turned out that for high and highest demands the

Reproducibility can still be improved.

It is therefore the object of the present invention to provide a dish unit which has a body covered with a film and which provides an even more reliable function.

This object is achieved by a crockery unit with the features of claim 1. The method according to the invention is the subject matter of claim 14. Preferred developments of the invention are the subject matter of the subclaims. Further advantages and features of the invention emerge from the general description and from the description of the exemplary embodiments.

A crockery unit according to the invention is designed in particular as a plate and is used in particular for the packaging, transport and / or consumption of food.

In particular, the crockery unit is used for the packaging, transport, preparation and later consumption of initially partially prepared meals that are prepared to the end after a delivery. The crockery unit has a body covered with a film, an adhesive being present between the film and the body in an adhesive area in order to seal the crockery unit. The crockery unit can in particular also be used for the preparation and / or preparation of meals or ingredients, for example one Can be used. The crockery unit includes one in particular

temperature-resistant body. The film comprises at least one sealing layer based on polyethylene (PE). The crockery unit consists at least partially of a ceramic material and in particular of a porcelain material. The adhesive comprises at least one pressure-sensitive hotmelt adhesive and consists at least in part of thermoplastic rubber. The sealing layer of the film is glued to the ceramic material of the dish unit.

The dish set according to the invention has many advantages. A significant benefit is that through. the choice of the material of the tableware unit and the film material as well as the adhesive achieve a reliable and also effective sealing of the body with a film during transport. In addition, the sealing film can be removed from the crockery unit without special precautionary measures or without any special effort, without unsightly residues of the adhesive remaining on the crockery unit. This also creates a visually pleasant overall impression. Overall, an even higher level of reliability is achieved in the sealing and in the removal of the adhesive together with the film than in the above-mentioned and as yet unpublished prior art.

The adhesive is selected so that when the foil is torn off, the adhesive remains at least predominantly to adhere to the foil. The formulation that the adhesive at least predominantly adheres to the film when the film is removed from the dish unit is to be understood in the context of the present invention that at least 90% or at least 95% or at least 97.5% of the mass of the adhesive when removing the film, the film sticks. In particular, at least 99% or more of the mass of the adhesive remains on the film when the film is removed. The figures mentioned apply to the regular case. It is not excluded that, for example, in one out of 10, 20, 50 or 100 cases, a larger percentage of the adhesive will remain on the dish unit. However, when the film is removed, the adhesive regularly loosens largely or practically completely from the

Crockery unit, so that no further cleaning of the adhesive area of the crockery unit is necessary before consuming the prepared food. In particular, no special treatment is required for the subsequent cleaning in order to remove any adhesive residues.

In a preferred development, the film consists at least partially of one

Plastic material and in particular has a thickness of 85 μm +/- 20%. In particular, the film has a thickness of 85 μm +/- 5% or +/- 10%. Such a film is stretchable and yet tear-resistant and is particularly suitable for the intended use.

The film is particularly preferably designed as a multilayer barrier film. A

multilayer barrier film can combine different properties, so that an optimal sealing can be achieved. An optimal seal can be achieved through a suitable material combination or combination of different layers of different materials. In this way, a high barrier property for gases, water vapor and aromas can be achieved, while at the same time a high one

Resistance to fats, oils and foods with chemical

Responsiveness is enabled. In addition, high impact resistance can be achieved. A high degree of transparency and a glossy impression can be achieved for a visually pleasant impression.

In advantageous embodiments, the film comprises at least one layer which consists at least partially of ethylene-vinyl alcohol copolymer (EVOH). Such a copolymer-polyvinyl alcohol enables overall a high barrier property against gases.

In preferred developments, at least one layer of the film consists at least partially of a material such as polyethylene terephthalate (PET). A layer of PET contributes to a high level of transparency and thus a visually pleasant overall impression. Furthermore, a layer of PET has the effect that the film has a high impact resistance overall.

At least one layer preferably consists at least partially of polyethylene, as a result of which very good sealing properties and a high barrier property against water vapor are achieved.

Overall, it is preferred that the film consists of several layers and that the layer composite has a layer of PET as the base material, a layer of EVOH and at least one layer of PE. Such a layer structure achieves excellent mechanical properties and barrier properties.

In all configurations it is preferred that at least one food is arranged on the body and covered by the film. In particular, at least one partially prepared food is arranged on the body, which can be prepared to the end or consumed directly after the film has been removed.

It is possible and preferred that the space between the film and the dish unit is partially vacuumed. This means, in particular, that there is a pressure in the space between the film and the crockery unit, in particular between 100 mbar

(preferably 250 mbar) and 800 mbar (preferably 500 mbar).

A gas mixture is preferably present in the intermediate space which consists of more than 50% N2 (nitrogen), more than 15% CO2 (carbon dioxide) and less than 10% O2 (oxygen). The proportion of N2 in the gas mixture is particularly preferably greater than 70%. The proportion of CO 2 in the gas mixture is preferably greater than 15% and the proportion of 02 in the gas mixture is in particular less than 10%. Correspondingly high proportions of N2 and 002 and correspondingly lower proportions of O2 in the gas mixture ensure a reduced reaction speed, so that partially prepared or completely prepared meals can be kept longer than if they are exposed to normal ambient air.

In a preferred development, the body has at least one mirror section and at least one frame section. The adhesive area is particularly preferred

Edge portion formed. In particular, the mirror section serves to accommodate at least one food. It is also possible that not only one mirror section is formed, but that several mirror sections are provided or formed on the body.

For example, a second or separate mirror section can be provided, which serves to accommodate a separate container or a separate bowl such as a sauce bowl or a jug for sauce or for other dishes or ingredients. It is preferred that at least one edge section runs around the body and thus completely surrounds a central area of the body. It is further particularly preferred that the adhesive area or at least one adhesive area extends completely and around the body. It is preferred here that at least one mirror section is entirely surrounded by a continuous adhesive area. This allows a

complete and safe sealing of the food on the dish unit can be guaranteed. The adhesive should especially after being applied to the body

Form a closed ring or the like, otherwise, for example, a protective gas mixture introduced under the film could escape and normal outside air could penetrate.

Preferably, the edge portion is at least in the adhesive area opposite the

Mirror section increased. Such an edge section makes it easier to grasp the

Crockery unit or the plate and also the setting down on a table or in one

Cooking appliance. A raised edge section in the adhesive area can also facilitate the application of the adhesive in the adhesive area, for example if the adhesive is applied via rollers or the like.

In particular, the crockery unit comprises at least one sauce dish, which is in particular positioned off-center on the body of the crockery unit. In particular, the

Sauce bowl placed closer to the edge. In particular, the sauce bowl is in one

Corner area of the body of the dish unit positioned in a reproducible manner. For this purpose, a corresponding depression or elevation can be formed on the body in order to receive the sauce dish in a defined manner on the body of the dish unit. In particular, a distance between the saucepan and the edge is less than 1/4 of the length and / or the width of the body of the vessel. The sauce bowl is in particular removable and typically the sauce bowl protrudes upward over the actual body of the dish unit. This represents the area of the sauce dish represents a difficult and critical area for gluing with the film. A sauce dish positioned close to the edge of the body and formed relatively high results in the film moving away from the adhesive area adjacent to the

Sauce bowl extends upward from a relatively steep slope. That is why there should be sufficient adhesive security there.

In all of the configurations it is preferred that the film is cut off outside the body in a contactless manner. In particular, there is no or only a slight lateral protrusion of the film on the body.

It is possible and preferred for an application surface for the adhesive to be formed on the body which provides the adhesive area. Such an application surface can be formed, for example, on an elevation extending along the adhesive area. The application surface preferably has defined dimensions and can

in particular have a width between approximately 1.5 mm and 10 mm and in particular between approximately 2 mm and 6 mm. For example, a width of around 3 or 4 mm is possible. Overall, the body preferably has a width between 10 cm and 25 cm and a length between 20 cm and 38 cm. In preferred embodiments, a width between 15 cm and 20 cm and a length between 25 cm and 35 cm can be present.

In particular, the dimensions of the body are adapted to the dimensions of a cooking appliance and in particular to the cooking space of the cooking appliance with which a, for example, partially prepared food is to be prepared to the end.

The dimensions of the body are preferably adapted to the cooking space of the cooking appliance so that the cooking space can accommodate a predetermined number of dishes without creating larger gaps (greater than 2 cm or 3 cm) and thus wasting space for the dishes. With dimensions of a

A cooking appliance 42.5 cm wide and 35.5 cm long can accommodate food

Preferably place two crockery units next to each other on the food rack, with enough space left to maneuver the crockery units and not wasting too much space. Overall, the dimensions of the crockery unit should be chosen so that when the maximum possible number of crockery units is placed on a food rack, at least 10% or 20% and a maximum of 30% or 40% of the

Food carrier remain free. As a result, too much space is not wasted and there is also sufficient space to grasp and position the individual dishes.

Particularly preferably, the body consists at least in part and in particular at least substantially or completely of a ceramic-like material. In particularly preferred further developments, the body consists at least partially or essentially or completely from magnesium oxide. Crockery units made of a ceramic-like and / or magnesium oxide material can be produced in different shapes and, due to their nature, are suitable for the preparation and consumption of meals. Dish sets based on magnesium oxide are lighter than conventional porcelain and yet just as impact-resistant. As a result, such crockery units are particularly suitable for regular and professional use, for transport and for multiple use.

In preferred developments, at least one food is arranged on the body and covered and sealed by the film.

By introducing inert gas or inert gases into the space between the body of the dish unit and the foil, the food ages more slowly.

Reactions can be delayed. The shelf life of food is increased and can be doubled, for example. , whereby the shelf life is improved.

In the method according to the invention for sealing crockery units with film and in particular at least partially partially prepared meals positioned on crockery units with a film, the at least partially made of a

Ceramic material consists of at least one adhesive applied to the crockery unit. The adhesive comprises at least one pressure-sensitive hotmelt adhesive and consists at least in part of thermoplastic rubber. The crockery unit is glued to the film by means of the adhesive. The film has at least one sealing layer based on polyethylene.

The method according to the invention also has many advantages. It enables a particularly reliable sealing of crockery units with a film, with a high mechanical stability and a high tightness of the seal being achieved.

Preferably, a space between the dish unit and the film is in front of. Gluing partially vacuumed. In particular, in the space between the

Crockery purity and the film set a pressure between 50 mbar and around 600 mbar.

An at least partial gas exchange preferably takes place in the space

carried out. For this purpose it is possible and preferred that at least one inert gas is supplied. The inert gas used can be, for example, nitrogen or carbon dioxide or a noble gas or a mixture of such gases.

In particularly preferred developments, the pressure is first reduced in the space until a first internal pressure (first reduced internal pressure) is reached. An inert gas is then fed in until a second internal pressure (second reduced internal pressure) is reached. Then gas is sucked off until a third internal pressure (third reduced internal pressure) is reached. The first internal pressure, the second internal pressure and the third internal pressure are preferably each lower than the ambient pressure. Particularly preferred are the first internal pressure and the third internal pressure in a pressure range below 500 mbar and the second internal pressure is greater than 500 mbar.

The crockery unit is preferably provided with an adhesive bead of the adhesive before food is positioned on the crockery unit. The film and the adhesive are preferably tempered during the gluing process. In particular to about 140 ° C to 160 ° C, preferably about 150 ° C. The tableware unit can also be temperature-controlled, with the tableware unit, however, preferably only being temperature-controlled to about 15 ° C to 25 ° C.

The adhesive is preferably applied using an adhesive application machine which comprises nozzles and / or stationary elements such as, for example, scrapers and / or rotating elements such as for example rollers. The crockery unit is preferably guided through the adhesive application machine via, for example, nozzles or via transport rollers with, in particular, a silicone coating, while the adhesive is applied during continuous transport of the crockery unit. It is advantageous if the glue application machine is equipped with ventilation. This makes the order seamless and stepless

Adhesive bead allows without an overlap at the abutting ends. This ensures that the film adheres completely all the way round.

Preferably, in the adhesive area covered by the adhesive application machine, a

Adhesive bead applied with an amount of adhesive of 25 to 40 milligrams per one centimeter of bead, in particular of about 30 milligrams per one centimeter of bead. The adhesive has a density of approx. 0.95 g / cm ³ . If the bead is 3 to 4 millimeters thick, this results in a surface application of 70 to 120 milligrams per square centimeter. Adhering to these parameters ensures, on the one hand, good and safe adhesion during the sealing process and, on the other hand, enables the film and adhesive to be removed without leaving any residue. Further advantages and features of the present invention emerge from the

Exemplary embodiments which are explained below with reference to the accompanying figures.

In the figures show:

Figure 1 is a plan view of a crockery unit according to the invention and a

perspective view of two crockery units in a cooking appliance ;.

FIG. 2 shows a highly schematic cross section through a crockery unit; FIG. 3a shows a plan view of another dish unit according to the invention; FIG. 3b shows a schematic section through the crockery units according to FIG. 3; FIG. 4 shows a highly schematic cross section through the film;

Figure 5 is a schematic representation of a dish unit in one

Glue application machine;

FIG. 6 is a highly schematic representation of a crockery unit with thereon

positioned food when covered with a film; and

Figure 7 is a highly schematic representation of a dish unit with thereon

arranged food that is sealed with a film.

FIG. 1 shows a highly schematic plan view of a crockery unit 1, which is designed here as a rectangular plate and includes a body 2. The body has one

Mirror section 3 and an edge section 4, which here comprises a total of four edge segments on the longitudinal and transverse edges. The edge section 4 delimits the mirror section 3 laterally. Between the actual edge section 4 and the actual mirror section 3, inclined edges can also be provided, as can be seen in FIG. 1 or in FIG.

The mirror section 3 provides enough space for several dishes 30, which can be part of a meal, for example. It is possible that there is space for a complete menu course on dish unit 1. At least some of these dishes can be partially prepared; H. be at least partially pre-cooked. Others can also be raw or frozen (e.g. a dessert). All components of a plate can be the same

Have aggregate state, but the components on different plates can also have different aggregate states. For example, a first

Crockery units also contain frozen foods and another crockery unit only contains foods with chilled ingredients.

The crockery unit 1 is sealed with a film 15, which cannot be seen separately here in the plan view because it is transparent. The film 15 is glued to the edge section 4 of the crockery unit 1 by means of the adhesive 21 which has previously been applied in the form of an adhesive bead 7 over the entire circumference of the edge section 4.

In the specific exemplary embodiment, the crockery unit 1 has a crockery width 5 of approximately 17 cm and a crockery length 6 of approximately 33 cm. But others are also possible

Dimensions. In particular, the external dimensions of the crockery units 1 are adapted to the internal dimensions of a cooking level 102 of a cooking space 1 Ö1 of a cooking appliance 100. Two dish units 1 can particularly preferably be placed on the cooking level 102 of the cooking appliance 100 at the same time. This allows two or preferably four

Crockery units 1 (on two cooking levels) can be picked up at the same time. The cooking space width 105 is preferably a little more than twice as large as a width 5 of the crockery unit and / or a cooking space length 106 is a little more than twice as large as a length 6 of a crockery unit 1. The crockery units 1 should have a cooking level 102 of the

Fill the cooking space 101 as completely as possible, but also leave a small space between each other and towards the cooking space walls. This enables the operator to easily remove the individual crockery units 1. It is particularly advantageous if the space between the utensil units 1 and around them is 10% to 40% and in particular 20% to 40% of the area of the cooking plane. A possible space between two utensils 1 is preferably at least 1 cm and preferably at least 2 cm.

The cooking appliance 100 has at least one high-frequency heating source 103, the emitted frequency of which can be changed in a controlled manner during operation. The high-frequency energy is preferably emitted from at least two antennas (not shown) and the emitted frequencies of the high-frequency heating sources 103 and their phases can be changed as a function of measured scatter parameters. As a result, specific areas and / or specific constituents or meals 30 can be cooked or regenerated on the dish units 1, while other meals 30 remain almost or completely unaffected by the high-frequency heating source 103 due to their composition, position and / or consistency. By taking up two or more dishes at the same time, two or more dishes served on the dishes can be regenerated and / or cooked to the end at the same time. As a result, the number of cooking devices required at the same time is correspondingly reduced if the final preparation of a meal is to take place for a group of people at the same time.

It is possible for the cooking appliance 100 to have, in addition to the high-frequency heating source 103, further heating sources such as those used in conventional cooking appliances.

FIG. 2 shows a crockery unit 1 in a highly schematic cross section. The body 2 of the dish unit 1 has a mirror section 3 and an edge section 4, the edge section 4 here having an inclined area and an adjoining area

comprises horizontal area which is aligned essentially parallel to the mirror section 3. In the horizontal area of the edge section 4, the adhesive area 8 is provided, on which a circumferential adhesive bead 7 made of an adhesive 21 is carried.

Crockery units 1 are preferably provided with an adhesive bead 7 made of an adhesive 21 and stored temporarily. The caterpillar 7 provided with an adhesive

Crockery unit 1 can be stored dry and in particular dust-free for a period of at least one day and optionally also for two, three or more days. Figures 3a and 3b show a specific embodiment of a dish unit 1 in a plan view and in a cross section. Figures 3a and 3b show the crockery units in the not yet sealed state. The crockery unit 1 is essentially rectangular and has rounded corners. The body 2 of the dish unit 1 here comprises a large and approximately trapezoidal mirror section 3 which fills the essential part of more than 50% and in particular more than 70% of the surface of the body 2. The

Mirror section 3 surrounds an edge section 4 which is used to grip the crockery unit 1 and also to fasten the film 15. Here in the exemplary embodiment, a second mirror section 23 is also formed separately on the body 2, which is used, for example, to accommodate a separate container 24 such as a sauce dish. However, other components can also be positioned in the container 24. A circumferential bead of adhesive 7 is again applied to the edge section 4. The edge section 4 here also forms the grip edge 9.

In the cross section according to Figure 3b it can be seen that the adhesive area 8 with the

Adhesive bead 7 is made available on an application surface 18. The adhesive area 8 can also be formed on the circumferential elevation 19.

FIG. 4 shows a highly schematic cross section through the film 15, which is designed here as a multilayer barrier film and here comprises three different layers 15a, 15b and 15c. The layer 15c serves as a carrier layer and here essentially consists of PET. The carrier material contributes to a high transparency and a high one

Impact resistance of the film. This ensures a mechanically high load capacity.

In particular, oriented inwardly towards the intermediate space 16 and towards the adhesive 21, the layer 15a is provided as a sealing layer, which consists in particular of PE (polyethylene) or comprises polyethylene as an essential or essential component. A layer of polyethylene achieves very good sealing properties and high adhesiveness. At the same time, good barrier properties are achieved, especially with water vapor.

The layer 15b arranged here in the middle is in particular an EVOH layer and consists of a copolymer of polyvinyl alcohol, in particular of ethylene-vinyl alcohol copolymer. The layer 15b gives the film 15 overall very good barrier properties against gases.

Overall, the film 15 has a high mechanical resistance and a high impact resistance. The film is overall transparent and gives it a shine. High barrier properties for gases, water vapor and aromas and thus a considerably improved shelf life are achieved. The thickness of the individual layers 15a, 15b and 15c can be different and is shown in FIG. 4 in a similar manner only for the sake of clarity. As a rule, the carrier layer will have the greatest thickness. The individual layers 15a, 15b and 15c can have very different thicknesses. It is also possible that the film consists of a layer composite of four, five or more layers, each of which can consist of different materials.

FIG. 5 shows a highly schematic representation of an adhesive application machine 20 through which crockery units 1 pass through in a continuous process and are provided with a coating of the adhesive. To apply the adhesive, nozzles 26 and / or scrapers 27 and / or rotatable rollers 28 can be used, to which adhesive or sealing material 21 is supplied through a storage container 31 with an adhesive supply 33. The roller preferably has a relief structure so that the adhesive can be carried along better.

Transport rollers 32, which move the dish unit relative to roller 28, can be a

Have silicone coating or the like, from which any adhesive on it can be easily removed. Preferably, in the adhesive area 8 that the

Adhesive application machine 20 covers an adhesive bead 7 with an amount of adhesive of 25 to 40 milligrams per one centimeter of bead, in particular of about 30 milligrams per one

Centimeter bead applied. The adhesive has a density of approx. 0.95 g / cm ³ . If the bead is 3 to 4 millimeters thick, this results in a surface application of 70 to 120 milligrams per square centimeter. Compliance with these parameters ensures, on the one hand, good and reliable adhesion during the sealing process and, on the other hand, enables the film 15 and adhesive 21 to be detached without leaving any residue.

FIGS. 6 and 7 show different crockery units 1, which are provided with, in particular, partially prepared dishes 30, in very schematic views before sealing (FIG. 6) and after sealing (FIG. 7).

Above the crockery unit 1 shown in FIG. 6, on which several dishes 30 are arranged, a film 15 is arranged, which is used for sealing. Here is it _. Foil 15 pictured before stretching and later sealing. The size of the foil is dimensioned such that the complete crockery unit 1 can be sealed. In particular, for this purpose, film is unwound from a film roll and cut to size accordingly.

The film has a total thickness of 85 μm and is sealed with the sealing layer 15a in

Positioned towards the dish unit 1.

First, the film 15 is heated and preheated. A first vacuum is generated or the pressure is reduced to a first internal pressure in the intermediate space 16 and overall in the chamber in which the crockery unit 1 is accommodated. This will get the absolute amount of Oxygen in the space 16 is reduced accordingly. An inert gas is then fed in until a second internal pressure is reached, which, however, is still lower than the normal ambient pressure. By supplying inert gas, the absolute oxygen content of the gas located in the intermediate space 16 is reduced again accordingly.

In this step, the film 15 is preferably placed against the food and the dish unit 1. In a third step, gas is sucked off until a third internal pressure is reached which is lower than the second internal pressure and, in particular, is higher than the first internal pressure. The third internal pressure is also preferably less than ambient pressure.

This procedure ensures that there is a high proportion of inert gas in the remaining interspace 16 (see FIG. 7) and that only a little oxygen is present, which is required for a chemical reaction. The low oxygen content is achieved at a relatively high internal pressure in the space 16. Without inert gas, the evacuation would have to be more intense in order to achieve the same amount of oxygen. FIG. 7 shows a very schematic illustration of a sealed crockery unit 1. The illustration is also schematic in order to be able to better show the space 16. In reality, the (pre-stretched) film 15 lies virtually seamlessly against the dish unit 1 and the food 30 in a wide area. This is achieved by the pressure levels set one after the other (first, second and third internal pressure) and by pre-heating the film 15. In addition, the film 15 is pre-stretched.

Finally, the film is pressed onto the crockery unit 1 and pressed for a certain period of time at a predetermined pressure or with a predetermined force. In the process, the bead of adhesive 7 is heated and melted and reproducibly seals the film 15 with the crockery unit 1. As a result, the film 15 is glued to the crockery unit 1. Ambient air is then supplied and the crockery unit 1 removed.

The body 2 of the dish unit 1 consists of a ceramic material and in particular a porcelain material. An adhesive hotmelt adhesive is used as the adhesive, which consists at least partially of thermoplastic rubber and which is transported through a supply hose heated to 150 ° C and applied to the edge section 4 of the crockery unit 1 with a nozzle or the like heated to 160 ° C . The adhesive first dries on the edge section 4 and cools down. The crockery unit 1 or the plate can be stored with the applied adhesive. For storage, a stack of plates is preferably covered with a protective film so that the plates are protected from dust and moisture. The adhesive is heated up again for bonding to the film.

Before sealing, the food is placed on the plate or the dish unit 1 and the dish units 1 loaded with dishes 30 are placed on a roller conveyor

Sealing machine transported. The adhesive hotmelt adhesive used has a density of approx. 0.92 +/- 0.02 g / cm3 at 20 ° C. and has a light yellow or transparent appearance. The recommended

Processing temperature is between 170 ° C and 190 ° C. Notwithstanding it has

found that applying the adhesive with a nozzle heated to 160 ° C. is advantageous. During the subsequent sealing, the adhesive bead 7 is preferably heated to a temperature between approximately 140 ° C. and 160 ° C. and in particular approximately 150 ° C. in order to achieve optimal results.

Overall, the present invention provides dish units sealed with foil, in which the foil can be detached almost without leaving any residue and in which food received on the dish unit is reliably sealed.

1 crockery unit, plate 23 mirror section

2 bodies 24 containers

3 mirror section 25 lower shell

4 edge section 25 26 nozzle

5 width 27 scrapers

6 length 28 roller

7 glue bead 29 knives

8 Adhesive area 30 food, component

9 Handle rim, rim 30 31 container

15 Foil 32 Transport roller

15a layer, sealing layer 33 adhesive supply

15b layer, EVOH layer 100 cooking device

15c layer, PET layer 101 oven cavity

16 Space 35 102 Cooking level

17 Bottom 103 High frequency heating source

18 Application area 105 width of the cooking space

19 Increase 106 cooking space length

20 glue application machine

21 adhesive, sealing material

Claims

1. Dish unit (1), in particular plate, for the packaging, transport and / or consumption of food (30), with a body (2) covered with a film (15), wherein between the film (15) and the Body (2) an adhesive (21) is present in an adhesive area (8) to seal the crockery unit (1),

characterized,

that the film (15) comprises at least one sealing layer (15a) based on polyethylene, and that the crockery unit (1) consists at least partially of a ceramic material, and that the adhesive (21) comprises at least one adhesive hotmelt adhesive and at least for Part consists of thermoplastic rubber and the sealing layer (15a) of the film (15) is glued to the ceramic material of the dish unit (1).

2. crockery unit (1) according to the preceding claim, wherein the film (15) consists at least partially of a plastic material and has a thickness of 85 pm +/- 20%.

3. crockery unit (1) according to any one of the preceding claims, wherein the film (15) is designed as a multilayer barrier film.

4. crockery unit (1) according to any one of the preceding claims, wherein the film (15)

comprises at least one layer (15b) which at least partially consists of ethylene-vinyl alcohol copolymer (EVOH).

5. crockery unit (1) according to one of the preceding claims, wherein at least one layer of the film (15) consists at least partially of a material such as polyethylene terephthalate (PET).

6. dish unit (1) according to one of the preceding claims, wherein at least one food (30) is arranged on the body (15) and covered by the film (15).

7. crockery unit (1) according to any one of the preceding claims, wherein a space (16) between the film (15) and the crockery unit (1) is partially vacuumed.

8. crockery unit (1) according to the preceding claim, wherein a gas mixture is present in the intermediate space (16) which consists of more than 50% N2, more than 15% C02 and less than 10% 02.

9. crockery unit (1) according to one of the two preceding claims, wherein the proportion of N2 in the gas mixture is greater than 70% and wherein the proportion of C02 in the Gas mixture is greater than 15% and wherein the proportion of O 2 in the gas mixture is less than 10%.

10. crockery unit (1) according to any one of the preceding claims, wherein the body (2)

has at least one mirror section (3) and at least one edge section (4) and wherein the adhesive area (8) is formed on the edge section (4), in particular the edge section (4) at least in the adhesive area (8) opposite the mirror section (3) is increased.

11. crockery unit (1) according to any one of the preceding claims, wherein a seed shell is included and is positioned eccentrically.

12. crockery unit (1) according to any one of the preceding claims, wherein protruding film

(15) is cut off without contact outside the body (2).

13. crockery unit (1) according to any one of the preceding claims, wherein the body (2)

consists at least in part of magnesium oxide.

14. crockery unit (1) according to any one of the preceding claims, wherein in one

Adhesive area (8) an amount of adhesive of 25 to 40 mg per cm, in particular of about 30 mg per cm, is applied.

15. A method for sealing at least partially partially prepared meals (30), wherein the meals (30) are positioned on a dish unit (1) and covered with a film (15), characterized in that on an adhesive area (8) the at least partially A crockery unit (1) consisting of a ceramic material is applied with at least one adhesive (21) which comprises an adhesive hotmelt adhesive and at least partially consists of thermoplastic rubber and a film (15) is glued to it, which has at least one sealing layer based on Includes polyethylene.

16. The method according to the preceding claim, wherein an intermediate space (16) between the dish unit (1) and the film (15) is partially vacuumed before gluing.

17. The method according to the preceding claim, wherein in the space (16) a

Pressure is set between 50 mbar and 600 mbar.

18. The method according to any one of the two preceding claims, wherein in the gap

(16) an at least partial gas exchange is carried out.

19. The method according to the preceding claim, wherein at least one inert gas is supplied.

20. The method according to any one of the two preceding claims, wherein in the space (16) first the pressure is reduced to a first internal pressure and then an inert gas is supplied until a second internal pressure is reached and then gas is sucked off until a third internal pressure is reached becomes.

21. The method according to the preceding claim, wherein the first, second and third.

Internal pressure are each smaller than the ambient pressure.

22. The method according to any one of the seven preceding claims, wherein the crockery unit (1) is provided with an adhesive bead (7) of the adhesive before food (30) are positioned on the crockery unit (1) and wherein the film (15) and the adhesive (21) are tempered during gluing.